Windows 10 Home Edition 64-bit
Intel Core i7-5820K
Acer XB270H GSYNC monitor (144hz)
When I restart my computer and enter certain games, my FPS will be 20-25 FPS when the game is focused. If I focus my desktop then look at the game in a window while NOT focused, my FPS will be normal 60-300 FPS depending on the game.
To fix this, I found this ranmdomly by the way. I need to go to my NVIDIA control panel and go to "Adjust Desktop size and position"... Whatever the settings I have selected doesn't matter, I need to hit "apply" for the fix to happen. When I restart my computer, no matter what settings I have selected, it will lag again and I then must hit "apply" again. TO get apply button enabled, I need to change the settings which seem to not matter.
I have no idea why this is happening but there is obviously something going on.