Optifine [1.17.1] [1.16.5] [1.15.2] [1.12.2]

What is OptiFine 1.14.4 For Minecraft?

Optifine is a Minecraft mod to improve game function. It helps players to boost FPS, provides HD texture. This mod allows players better FPS performance. It will make your gameplay experience even better. You could double or triple your FPS with this mod.

Optimize your Minecraft experience with OptiFine. Combined with HD textures and many configuration options, it makes Minecraft run faster and look better.

All OptiFine mods provide a large FPS boost to your game. Important to mention Optifine also reduce the lag spike in Minecraft and minimize visual bugs.

Additionally, Optifine has its own user interface. It allows players to directly change certain characteristics of the game’s graphics. Our favorite feature is the ability to toggle fog, clouds, smooth light, and a lot more.

Optifine has a great user interface that allows you to easily modify game graphics. It has the ability to modify many aspects of game graphics such as toggle fog, cloud, smooth, and many more options.

Optifine has become the most popular mod among Minecraft players due to its positive effect on Minecraft. There are many new advanced texture packs are added to the Optifine.

The Optifine Mod for Minecraft. It was made by sp614x in 2011. That time the game had serious performance and lag issues, so this mod came right in time to solve those issues.

It provides much better performance and graphics, in addition, it allows HD textures. There are lots of configurations you can do to optimize the game for your PC. A perfectly configured Optifine setting can double or triple your FPS rate.

A smoother game run and less resource consumption are the results.

Optifine HD Ultra Official Download Links

Download Optifine HD Ultra 1.14.4 F3

Download Optifine HD Ultra 1.14.4 F2

Download Optifine HD Ultra 1.14.4 F1

Download Optifine HD Ultra 1.14.3 F2

Download Optifine HD Ultra 1.14.3 F1

Download Optifine HD Ultra 1.14.2 F1

Download Optifine HD Ultra 1.14

Optifine 1.13.2 Ultra HD For Minecraft 1.13.2

Download Optifine HD Ultra 1.13.2 E4

Download Optifine HD Ultra 1.13.2 E5

Download Optifine HD Ultra 1.13.2 E6

Download Optifine HD Ultra 1.13.2 E7

Download Optifine HD Ultra 1.13.2 F5

Optifine 1.12.2 Ultra HD For Minecraft 1.12.2

Download Optifine HD Ultra 1.12.2 C6

Download Optifine HD Ultra 1.12.2 C8

Download Optifine HD Ultra 1.12.2 D2

Download Optifine HD Ultra 1.12.2 E2

Download Optifine HD Ultra 1.12.2 E3

Download Optifine HD Ultra 1.12.2 F5

Download Optifine HD Ultra 1.12.1 C6

Download Optifine HD Ultra 1.12.1 C7

Download Optifine HD Ultra 1.12.1 F5

Download Optifine HD Ultra 1.12 C3

Download Optifine HD Ultra 1.12 C7

Download Optifine HD Ultra 1.12 F5

Download Optifine HD Ultra 1.11.2 C3

Download Optifine HD Ultra 1.11.2 C7

Download Optifine HD Ultra 1.11.2 F5

Download Optifine HD Ultra 1.10.2  E3

Download Optifine HD Ultra 1.10.2  H5

Download Optifine HD Ultra 1.10.2 H5

Optifine 1.8.9 Ultra HD For Minecraft 1.8.9

Download Optifine HD Ultra 1.8.9 H8

Download Optifine HD Ultra 1.8.9 I3

Download Optifine HD Ultra 1.8.9 I7

Download Optifine HD Ultra 1.8.9 L5

Optifine 1.7.10 Ultra HD For Minecraft 1.7.2

Download Optifine HD Ultra 1.7.10 D8

Download Optifine HD Ultra 1.7.10 E3

Download Optifine HD Ultra 1.7.10 E7

Credit: sp614x, Source: optifine.net

How to install Optifine HD

The installation process of OptiFine is very easy and faster. Just like any standard Mod, you can install it in a few simple steps. Then, you successfully install OptiFine with your Minecraft.

1.Download the OptiFine 1.15.2/ 1.15.1/ 1.15/ 1.14.2 HD file

You can easily download the latest version of the OptiFine mod from our download links below

There are several versions of Optifine download links available. You can choose your suitable version.

note:  It is important to mention. You should download the Optifine version which is compatible with the current version of the Minecraft game that you are playing.

2.Download Minecraft Forge

You need to install Minecraft Forge. If you are looking for Minecraft Forge. You can download the corresponding Minecraft Forge from this link here.

Now you need to locate the Minecraft application folder on your computer.

If you are on a Windows computer, go to the start menu. Now type “%appdata%” and click Run.

For Mac, open finder. Now hold down ALT and then click go then Libary in the top menu bar.

You have to open the folder Application support. Then, look for Minecraft.

You can now place the downloaded mod file (.jar file) into the Molds folder there.

You could also install the mod automatically through the third step.

Important note: You need to download the corresponding version of the Minecraft forge to the game version to match with the Optifine version.

3. Run the OptiFine Installer

Now, we need to unzip the downloaded file

Once unzipped, you need to run the installer by double-clicking on it

Note: It is important to make sure that the installation path is correct

Now, it will start installing. Give it a few secs to complete the installation process. After the installation is done. It will show the installation has been successful a prompt will say “OptiFine is successfully installed”.

Congratulations you have successfully Installed OptiFine 1.15 Preview version. Now all you have to do is launch the Minecraft game and enjoy it in a much better way. This installation process is the same for all the versions of Optifine.

You can check the video to better understand the installation process of Optifine from our article.

Previous Version Download links

OptiFine 1.15.2 HD U G1 Pre26 – Download | Changelog | 14.06.2020

OptiFine 1.16.5 HD U G7 – Download | Changelog | 04.03.2021

OptiFine 1.16.4 HD U G7 – Download | Changelog | 20.02.2021

OptiFine 1.16.3 HD U G5 – Download | Changelog | 06.11.2020

OptiFine 1.16.2 HD U G5 – Download | Changelog | 06.11.2020

OptiFine 1.15.2 HD U G1 Pre18 – Download | Changelog | 19.05.2020

OptiFine 1.15.2 HD U G1 Pre 14 – Download | Changelog | 02.05.2020

OptiFine 1.15.2 HD U G1 Pre13 – Download | Changelog | 21.02.2020

Optifine 1.15.2 HD – Download | Changelog | 21.02.2020

Optifine 1.14.2 HD – Download | Changelog | 16.02.2020

Optifine 1.14.1 HD – Download | Changelog | 16.02.2020

Optifine 1.14 HD – Download | Changelog | 16.02.2020

Optifine 1.13.2 HD – Download | Changelog | 16.02.2020

Optifine 1.12.3 HD – Download | Changelog | 16.02.2020

Optifine 1.12.2 HD – Download | Changelog | 16.02.2020

Optifine 1.11.2 HD – Download | Changelog | 16.01.2020

OptiFine 1.15.2 Features

This mod helps with FPS, it is the core feature of this mod.

FPS boost

• doubling the FPS in the game.
• lower the lag spikes, so you can enjoy the smooth gameplay

Support for HD Textures

• It has HD textures and HD fonts support
•  now we get custom terrain and item textures
•  they added animated terrain and item textures
• custom HD Font character widths are added
• new custom colors are added
• new custom block color palettes added
• custom lighting added to this version
• now we get unlimited texture size

Support for Shaders

It is based on the Shaders

Dynamic Lights

The latest version allows handheld and dropped light-emitting items. It uses to illuminate the objects around them.

Variable Render Distance

• It will be tiny to Extreme (2 x Far) in 16m steps
• sun, moon, and stars will be visible from a distance

Configurable Smooth Lighting

• Now it will allow 1% – smooth lighting without shadows
• you will get 100% smooth lighting with full shadows

Performance: VSync

Synchronizes frame rate with monitor refresh rate to remove split frames and smooth gameplay

Smart Advanced OpenGL

• newly added function more efficient, fewer artifacts
• It will make it faster and some artifacts still visible
• Now it will avoid slower, avoids visual artifacts

Fog control

• new Fog feature: Fancy, Fast, OFF
• updated Fog start: Near, Far

Mipmaps

• It will have visual effects. it makes distant objects look better by smoothing. We love to see the texture details.
• updated Mipmap level – from OFF, 1, 2, 3, Max
• Mipmap has a setting option – Nearest, Linear

Anisotropic Filtering

• This feature helps to restore details in mipmapped textures in Minecraft.
• updated AF level – from OFF, 2, 4, 8, 16 ( use this feature based on your system)

Antialiasing

• Smooths jagged lines and sharp color transitions
• AA level – OFF, 2, 4, 6, 8, 12, 16 (depends on hardware support)

More Features of OptiFine 1.15.2

This latest version of this mod will have better quality grass, snow, water, more random mobs, clear water, natural quality textures, and many more. We have seen connected texture quality with this recent version of this mod.

Players will find this update FPS control feature very useful. Also, the chunk loading control has also improved to this version. We are getting preloaded chunks and it loads far. Chunks also update per frame. Players who are standing still can now load more chunks per frame. Key feature improvements are listed below,

• Better Grass
• Better Snow
• Clear Water
• Natural Texture Quality
• FPS Control improved
• Chunk loading improved
• Connected Texture

Configurable Details have

Clouds (default, Fast, Fancy), Cloud Height (from 0% to 100%), Trees (Default, Fast, Fancy), Grass (Default, Fast, Fancy), Water (Default, Fast, Fancy), Rain and Snow (Default, Fast, Fancy), Sky (ON, OFF), Stars (ON, OFF), Sun & Moon (ON, OFF), Depth Fog (ON, OFF), Weather (ON, OFF), Swamp Colors (ON, OFF), Smooth Biomes (ON, OFF), Custom Fonts (ON, OFF) Custom Colors – (ON, OFF)  Show Capes (ON, OFF ) supports HD capes.

Configurable animations

There are many new animations that are added to this version of Optifine.

Configurable animations Water Animated (OFF, Dynamic, ON), Lava Animated (OFF, Dynamic, ON), Fire Animated (OFF, ON), Portal Animated (OFF, ON), Redstone Animated (OFF, ON), Explosion Animated (OFF, ON), Flame Animated (OFF, ON), Smoke Animated (OFF, ON), Void Particles (OFF, ON), Water Particles (OFF, ON), Rain Splash (OFF, ON), Portal Particles (OFF, ON), Dripping Water/Lava (OFF, ON), Terrain Animated (OFF, ON), Items Animated (OFF, ON).

There are many more settings are available in the new user interface of Optifine.

• Fast Texture Pack Switchingthis option switches the current Texture Pack.
• Fullscreen ResolutionYou can now Configure fullscreen resolution in the Minecraft game with this mod.
• DebugA Fast Debug Information is added. It helps to removes the lag-o-meter from the debug screen. The Debug Profiler is now removing the profiler from the debug screen.
• Time ControlThe time control option is Default set up. You can set it to Day Only or Night Only. It works only in Creative mode.
• AutosaveAutosave is now Configurable Autosave interval. There was a lag spike issue of death that is now solved.

How Useful is OptiFine HD?

Optifine HD focuses on providing the best experience to the players by giving a substantial boost to the performance rate. Many players using the Optifine mod to significantly increase the frame rate in Minecraft.

The game had a noticeable lag spike and frequent frame rate drop. But, Optifine HD came in place to optimize the game and at the same time provide high-quality graphics. It made fun for players to enjoy the game at a stable frame rate.

Optifine substantially increases the FPS in Minecraft. There are many other features in this mod. It also improves the game processing, performance, texture, and game graphics. This mod is very popular because of its support for HD textures.

This mod also allows large variable render space. It manages the rendering processing in the game of intense. The sky textures are visible in short leave spaces. All these features are not generally accessible in vanilla.

Optifine HD mod can also add mipmaps support. It makes it easier for players to understand the distance. Optifine HD has simpler visual features than we have already discussed above. You can adjust settings including fog control, grass, snow, clearer water textures, etc.

Optifine Helpful Features

There are many more advanced features in the Optifine HD mod. It adds advance to the players with the visual effect. There is anisotropic filtering is one such example, providing support for mipmapped features.

It has an antialiasing feature that provides smoothness, more pixels in the game. There is a V-Sync feature is added to Optifine. This mod helps with a frame rate as well as refresh rate for the player monitor.

It supports the OpenGL feature.  It is a noticeable feature for players to adopt. Most players enjoy this advanced graphical feature. OpenGL helps to adjust game artifacts and creating a better visual experience for players.

Players can manage the distance load with this mod. This is a very useful tool even for less powerful computers. This mod allows certain chunks to no load. It enables the game to waste resource load that is not yet explored. There is no point in loading the part of the game that is not explored yet.

You can improve many graphical settings like fire, water, lava, explosion with Optifine. It also improves the performance of the game as well. This is the best mod for Minecraft to improve gameplay and graphics. It simply makes your game run faster, smoother and provides HD graphics. It is definitely a great mod for Minecraft.

The textures of cutouts (leaves, glass) can now be checked for alpha values.

Does It Increase your Minecraft FPS?

Optifine tremendously increases your Minecraft FPS. it will increase the FPS for anybody playing Minecraft 1.15.2. It matters not if you are playing with or without an internet connection. It will still work on any version of the game.

But, you should install the same version of Minecraft. This way it works to provide the best performance. You will find new and older versions of this mod. So, you would like to play an older version of Minecraft. You can easily get a suitable version. It is recommended to use the same version of the mod with the game. This way you can get the best performance.

After installing this mod their many settings you can play with. You can use a proper setting to optimize the game for you and get even more FPS.

Some of the tricks you can use to increase FPS are below,

• Set Graphic to fast
• Turn off the smooth lighting
• Establish the distance too short/tiny
• Set the Performance to maximum FPS
• Set AdvancedOpenGL too fast
• Turn off animations
• Turn off fog
• twist of clouds

You can play with all these settings on Optifine Hd 1.16.5. Your Minecraft game with the run even faster. So, you can enjoy the game.

Minecraft is an open-source game. You can easily optimize it yourself. It is possible to edit the way that it looks. OptiFine comes to play the role of optimizes it for you with no knowledge of programming.

It provides a new user interface that lets you toggle numerous functions to further maximize the graphic to your own specification.

OptiFine is known to possess fixed compatibility. It makes it possible to get HD in Minecraft even on older computers.

Функциональные возможности

Мод OptiFine HD для игры Minecraft устраняет притормаживания и лаги. Этот модификатор содержит несколько версий. Выбирая одну из них, пользователю необходимо учитывать мощность своего компьютера. Для слабого по характеристикам оборудования подойдет Light, полноценный набор настроек (графические эффекты и текстуры высокой четкости) содержит ULTRA. После установки, которая выполняется в несколько этапов, компьютерное устройство будет способно выдерживать самые сильные игровые нагрузки.

Видео обзор программы OptiFine HD:

Среди функций, которые предоставляет пользователю это программное решение, стоит выделить:

• активация скрытых настроек игрового приложения;
• повышение эстетического эффекта текстур;
• добавление поддержки шрифтов и текстур высокого качества;
• возможность настроить систему управления под свои потребности;
• использование игры на полную мощность.

Установка программного обеспечения + русификатор не вызывает сложностей. Пользователю необходимо скачать файл и распаковать его. При помощи Java следует осуществить запуск, нажав кнопку «Install». После этого в настройках профиля нужно изменить применяемую версию. В итоге будут доступны все функции данного решения, которое избавляет от лагов, фризов и зависаний.

Приложение повышает производительность, делает более качественными текстуры и скины, ускоряет процесс загрузки чанков. Это отличная программа для маломощных компьютеров клиентов, которые увлеченно играют в Minecraft. Она станет незаменимым помощником при выборе настроек, которые связаны с графикой игры. Скачивайте и устанавливайте OptiFine HD! Приложение, разработчик которого постоянно совершенствует свой продукт, позволит таким элементам, как шрифты, освещение, трава, снег и т.д., работать более корректно и качественно. Удачного использования и новых достижений в знаменитой игре, название которой Майнкрафт.

Как установить Minecraft OptiFine

OptiFine – это стороннее программное обеспечение, отдельное от основной игры Minecraft. Это означает, что вы можете видеть предупреждения или уведомления о том, что то, что вы загружаете, может быть небезопасным. Будьте уверены, OptiFine безопасен, и мы предлагаем вам правильные загрузки.

Шаг 1. Загрузите и установите Java

Нажмите большую красную кнопку на этой странице, чтобы загрузить и установить его. Если ваш веб-браузер предупреждает вас о недопустимости таких файлов, вы можете оставить его; это безопасный файл.

Шаг второй: загрузите OptiFine

Как только вы найдете версию OptiFine для вашей версии Minecraft, нажмите кнопку напротив нее с надписью « Загрузить». После того, как вы нажмете кнопку загрузки, вы попадете на страницу с рекламой. Через несколько секунд нажмите « Пропустить» на странице объявления, чтобы перейти на нужную страницу загрузки.

На этой новой странице нажмите кнопку с надписью Загрузить еще раз. Ваш веб-браузер может предположить, что этот тип файла небезопасен. Вы можете не обращать на это внимания; это правильная ссылка, и этот файл безопасен. Просто убедитесь, что вы нажали правильную кнопку.

Шаг третий: установите OptiFine

Это та часть, которая требует первой установки Java, поскольку она не позволит вам выполнить этот шаг, если вы этого не сделали. Перейдите в каталог загрузок, в который вы скачали OptiFine. Вы увидите в списке файл .jar.

Дважды щелкните загруженный файл OptiFine .jar, чтобы открыть новое окно для установки OptiFine. Примечание. Если вы сначала не установили Java, это не сработает. Если вы этого не сделали, вернитесь к шагу 1 в этом руководстве для установки, а затем попробуйте снова открыть файл .jar.

Нажмите кнопку «Установить» в этом новом окне. OptiFine установится самостоятельно, без необходимости настраивать его в программе запуска.

Шаг четвертый: поиграйте с OptiFine

Теперь, когда он установлен, откройте Minecraft Launcher. Когда вы откроете его, вы увидите на вкладках вверху вкладку с названием « Установки». Перейдите на эту вкладку.

Выберите из списка версию OptiFine, которую вы только что установили, затем нажмите « Воспроизвести». Вам будет показано предупреждение от игры о том, что это сторонняя версия и что они не могут гарантировать, что в ней есть все функции безопасности, установленные Minecraft в настоящее время. Опять же, OptiFine безопасен, поэтому использование этой версии не нанесет вреда вашему компьютеру.

С этого момента у вас настроен OptiFine, и вы можете использовать его для установки различных пакетов текстур и шейдеров, чтобы ваша игра выглядела потрясающе! Скорее всего, вы также получите более высокую частоту кадров и лучшую производительность при увеличении настроек видео.

Optifine Settings

You have very customizable settings in Optifine. They have adjustment settings like brightness, performance, animation, texture, etc. All these settings will help you to customize the game for a better FPS. It is really a very helpful mod for Minecraft players.

You can hover your mouse over the settings. It will explain to you, what it for.

OptiFine supports HD quality texture.

You will notice remarkable HD quality graphics with Optifine. The most important settings are the animations.

• Fire animation
• Redstone animated
• Water animated
• Flame animated
• Texture animated
• Terrain animated
• Lava animated
• Portal animated
• Smoke animated
• Portal particles
• Water particles

You can choose from them. These are very useful settings. You can turn them on or off according to your needs.  And, your Minecraft will run faster.

The animation is really amazing for mid to high-end computers. You may want to turn them off for older computers.  You should turn everything on for the best Minecraft experience.

Changing in setting may cause a map to reload. You may also need to do a chunk reload. So, it will take a little more time to load everything in after changing the settings. Make sure to wait a bit for a little lag after saving the settings.

Optifine has video setting you should check that includes,

• Graphics
• Smooth lighting
• Performance
• Brightness
• Clouds
• Texture Packs

There are more Settings

There are many more settings in Optifine. You can change them to get a better-optimized game. It also allows you to change almost everything things the way it looks in Minecraft. All these will affect your FPS. Either, you will get a better FPS or lower FPS. There is a custom setting option in order to get things the way you want to see your game.

Optifine provides Antialiasing, you turn it on and off in your game. Changes in the setting might require a restart. Antialiasing helps to smooth the edges and provides improved graphics.

It is a great mod for gamers with a slow computer. Because it has many settings it will help you to better optimize the game in terms of loading and FPSS lag.

So, now you don’t have to worry if you have a slow computer. You can also enjoy Minecraft with high performance. You will have a lag-free experience with a higher frame rate. Optifine is the best mod to boost the FPS of Minecraft.

Some Advance Functions

There are some more advanced functionalities in Optifine. With the standard setting, you can add HD texture. It will enhance graphics quality for better grass.

The smooth settings allow to remove lag spikes and make the game more enjoyable for the players.  Multicore settings allow the user to smooth edition. These settings work very effectively if you have a multi-core processor.

Optifine is the best tool to make your Minecraft experience better. You can enable anthropic filtering. If you have a fast computer, you can use this feature. It is one of the cool features of Optifine.

There are a lot of settings in this mod. So, if you are confused with any. We have a written guide on them. You could check it out. Also, they have a tooltip to find out what are the settings for. This Minecraft mod you can use in a very personalized way. Best mod for Minecraft players who love to enjoy the game in HD quality graphics.

Minecraft 1.9.4

OptiFine HD U I5

Download

(Mirror)

Changelog

Forge #2051

24.01.2021

OptiFine HD U H5	Download	(Mirror)	Changelog	Forge #2051	04.12.2019
OptiFine HD U E7	Download	(Mirror)	Changelog	Forge #2051	28.12.2017
OptiFine HD U E3	Download	(Mirror)	Changelog	Forge #2051	29.06.2017
OptiFine HD U D8	Download	(Mirror)	Changelog	Forge #2051	04.05.2017
OptiFine HD U D7	Download	(Mirror)	Changelog	Forge #2051	14.03.2017
OptiFine HD U B6	Download	(Mirror)	Changelog	Forge #1987	30.06.2016
OptiFine HD U B5	Download	(Mirror)	Changelog	Forge #1937	07.06.2016
OptiFine HD U B4	Download	(Mirror)	Changelog	Forge #1909	19.05.2016

How Does OptiFine HD work?

This mod works efficiently with the most recent versions of Minecraft. It works with 1.15.2. Both beta and alpha. It fixes many interesting problems in the beta. We have listed them down below,

• Black horizon on disable shaders
• Load visible chunks
• Mipmap issue fix and blending
• Addition of projectionMatrixInverse and modelViewMatrixInverse
• Shader sliders
• Button Done at GUIMessage
• Shaders uniform isEyeInWater for waterlogged blocks
• Crash with Java 9+ fixed
• It also fixes many other issues.

It also works in the older versions also. You will miss out on some specific details. But, it is much better to see the game run faster and smoother. Even if it works very well in the older computer system.

The most useful thing you will notice after using Optifine HD, your graphic went pretty good and it runs smoother.

Minecraft 1.11.2

OptiFine HD U G5

Download

(Mirror)

Changelog

Forge #2588

24.01.2021

OptiFine HD U F5	Download	(Mirror)	Changelog	Forge #2588	04.12.2019
OptiFine HD U C7	Download	(Mirror)	Changelog	Forge #2530	28.12.2017
OptiFine HD U C3	Download	(Mirror)	Changelog	Forge #2366	27.06.2017
OptiFine HD U C2	Download	(Mirror)	Changelog	Forge #2311	13.06.2017
OptiFine HD U C1	Download	(Mirror)	Changelog	Forge #2311	02.06.2017
OptiFine HD U B9	Download	(Mirror)	Changelog	Forge #2298	18.05.2017
OptiFine HD U B8	Download	(Mirror)	Changelog	Forge #2294	04.05.2017
OptiFine HD U B7	Download	(Mirror)	Changelog	Forge #2227	09.02.2017
OptiFine HD U B6	Download	(Mirror)	Changelog	Forge #2214	12.01.2017
OptiFine HD U B5	Download	(Mirror)	Changelog		22.12.2016

HD Ultra

Вы прокачаете кубический мир до нового уровня. Вас ожидает Майнкрафт с детализированной графикой, тенями, солнечными лучами, повышенным FPS и жидкостями.

Это затратно для компьютерных ресурсов.. Не любое железо потянет улучшения. Оптифайн оптимизирован для слабых компьютеров. Выбрав один из шести профилей, вы сможете сделать настройки под требования системы.

Обновите дизайн блоков, мобов, улучшите освещение и природу. Покажите критичным геймерам, что пиксельный мир может выглядеть не хуже компьютерных или консольных хитов. Играйте в любимые кубы с новой реалистичной графикой. Позабудьте о тормозах!

Как установить Optifine

Установка для 1.5.2:

1. Найдите minecraft.jar. Он обычно расположен по адресу «%appdata%/.minecraft/bin».
2. Лучше сделать резервную копию, скопировав его куда-нибудь.
3. Откройте его программой WinRAR.
4. Удалите папку META-INF.
5. Скачайте zip-архив с Оптифайн и перетащите все с расширением class в minecraft.jar с заменой.
6. Запускайте клиент и проверяйте.

Установщик (для 1.6.2 и выше):

1. Скачайте мод на оптимизацию на компьютер.
2. Запустите его двойным щелчком мыши.
3. Кликните Install.
4. В лаунчер добавится новый профиль. Выберите его.

Если используете Forge, то поставить можно по следующей инструкции (для 1.6.2+):

1. Поместите мод в каталог «mods».
2. Forge должен автоматически подгрузить оптимизатор при запуске.