Windows 10: optimization in fullscreen

Hello, for last month my pc running wild. Every time i get in to fullscreen in games fps seems to lock around 30. borderless windows sometimes works, but most of the time its the same. Only window mode in games makes them work in normal fps. How do i fix it? it use to work normal back then. Windows 11 GeForce gpu

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What exactly is FullScreen Optimization in Creator's Update?

I was not able to find any documentation or description, official or unofficial, on what the "fullscreen optimization" really does?

It turns "true" fullscreen mode into a hybrid Borderless Windowed mode.

With certain games it is recommended to disable fullscreen optimization. Some reports better FPS, reduced input lag, but the results vary per game, probably per configuration.

Sources:

1. How to Disable Fullscreen Optimizations on Windows 10/11
   
2. What exactly is FullScreen Optimization in Creator's Update?
   
3. Reddit - Dive into anything
   

 

Can Fullscreen optimization cause input lag?

I've heard some games like Overwatch and CSGO can have some lag input when fullscreen optimization is enabled. Can you tell me what Fullscreen optimization actually does?

 

Disable fullscreen optimizations for everything?

Is it possible to completely disable fullscreen optimizations with one setting instead of clicking on every game executable I have?