Navigate to the modules section in Magisk Manager, select “Install from storage,” and choose the GLTools zip file.
Get the GLTools Magisk module zip file from a reputable source. gltools magisk module
: Don't apply global settings. Use the GLTools app to select only the specific game you want to optimize to avoid breaking your system UI. Navigate to the modules section in Magisk Manager,
Force-enable 2x, 4x, or 16x MSAA even if the game doesn't support it, or disable it entirely in games that force it on. select “Install from storage
Lower the internal rendering resolution of games to boost FPS on lower-end hardware.