• Now's your chance win big! Join our community and get entered to win a RTX 2060 GPU, plus more! Join here.

    Pi Cast Episode 3 streams live on Tuesday, August 4th at 2:30 pm ET (7:30 PM BST). Watch live right here!

    Catch Scharon on the Tom's Hardware Show live on Thursday, August 6th at 2:00 pm ET (7:00 PM BST). Click here!

Fullscreen Window Mode vs Fullscreen performance question

Banana Phone

Reputable
Aug 18, 2015
19
0
4,510
0
Hello,
I know that Fullscreen yields more FPS than Fullscreen Window Mode, minus the ease of alt tabbing for multitasking.

In some games like CSGO, with my GTX 1060 I get over 150 FPS easily however in Fullscreen Window Mode (I still get very high FPS) the game doesn't feel as smooth/responsive as it would be in Fullscreen. I don't get any FPS drops. It's just the smoothness feeling that gamers can't describe well in words :D

Any idea why?

EDIT: I may have confused Fullscreen with Borderless.
 

FabioXN7

Respectable
Jul 18, 2017
354
0
2,160
125
It's because while playing the game on Fullscreen all your computer resources are focused in rendering the game only, that's why you get better fps along the way, your GPU and CPU are both rendering the game and the game only so most of the apps will have it's current resources decreased so they can be spared for the game. While in Borderless or Windowed Fullscreen your computer will be rendering both the GAME and your DESKTOP along with all other Applications and stuff that's why you get a performance hit most of the time. If you have a great computer and the game is not very demanding in terms of CPU / GPU and so on... then you won't notice much of a difference in FPS just like now in CS GO, but try that with any other more demanding game like GTA V or BF1 and you'll see the difference.
 

FabioXN7

Respectable
Jul 18, 2017
354
0
2,160
125
It's because while playing the game on Fullscreen all your computer resources are focused in rendering the game only, that's why you get better fps along the way, your GPU and CPU are both rendering the game and the game only so most of the apps will have it's current resources decreased so they can be spared for the game. While in Borderless or Windowed Fullscreen your computer will be rendering both the GAME and your DESKTOP along with all other Applications and stuff that's why you get a performance hit most of the time. If you have a great computer and the game is not very demanding in terms of CPU / GPU and so on... then you won't notice much of a difference in FPS just like now in CS GO, but try that with any other more demanding game like GTA V or BF1 and you'll see the difference.
 

Dunlop0078

Champion
Ambassador
You are probably feeling input lag. Windows forces triple buffering on programs run in windowed mode, triple buffering will increase input lag quite a bit which would probably be noticeable in a twitch shooter like CSGO.
 

Banana Phone

Reputable
Aug 18, 2015
19
0
4,510
0


Okay that makes some sense. Is there a way to stop Windows from forcing triple buffering?
 

ASK THE COMMUNITY