Hello. Did you know that on an old processor you can play the new version without lags? This post will not contain stupid advice to move all parameters in Optifine to minimum.

I will tell you using the example of modifying Iris. After installation, we are interested in the Options-Video Settings-Advanced-CPU Render-Ahead Limit tab - set the value to 0.

Next we need a Paper server. Download it and install it. Customize as you wish, do not forget about the white list.

After that, we launch it and connect via Multiplayer-Add Server-Server Address - write localhost.

In total, we have to do extra work, but the main problem is that lags during the generation and loading of chunks are minimized or completely disappear.

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Plus information for owners of AMD video cards.

You can record videos and take screenshots of the Minecraft game in full screen mode. To do this you need to add the Javaw.exe game by the address [C:\Users\YourProfileName\AppData\Local\Packages\Microsoft.4297127D64EC6_8wekyb3d8bbwe\LocalCache\Local\runtime\java-runtime-gamma\windows-x64\java-runtime-gamma\bin] (for Windows 10)

Also after this you can activate FSR in your javaw.exe game profile. After that, you need to go to the Record and Broadcast menu, select Full Screen and select Display 1 (or another if you have multiple screens).

Thats all! Please, enjoy.