Windows 10: Fullscreen optimizations for gaming

Good day. So I've been curious about this fullscreen optimization feature and what it actually does. I've read somewhere else that it may even break things or cause apps to work worse.

I've been trying to fix this issue where, I'm playing genshin impact in Fullscreen mode, and my riva tuner doesn't always grab it and detect it to show frame rate. Also, I wasn't able to stream it in fullscreen in discord and by miracle, both of these issues got fixed instantly after I've disabled fullscreen optimizations for the genshin's exe. Buttery smooth frame rate, no stutter, I'm now able to easily attach riva tuner to the game and at the same time stream it through discord and I even streamed it and recorded through OBS at the same time.

Should I disable these optimizations for every game I play? Or it doesn't improve the stability of the every videogame if I disable it?

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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
   

 

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?

 

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?