Does "GPU Scaling" cause input lag?

[NirK]

When playing CS:GO I like to play in 4:3 resolution....

If I tick the "use gpu scaling" in ATI/AMD control panel this is the only way I can get it to scale to 1400x1050 as the montitor will stretch the image to fit screeen. (Monitor is a NEC 20wgx2).

I am not sure if I am imagining it or does the GPU scaling add a small amount of input lag?

Can anyone conclusively tell me the answer. I know theoretically that "another process would cause more lag etc." but does it actually cause any input lag in real usage or is it such a simple job for the GPU that it makes no difference?

 

[NirK]

Anyone?

 

[NirK]

It can. Whether that's your problem we can't really say.

But are you just guessing or do you actually know for a fact?

 

[NirK]

Ok thanks but I was just trying to confirm it if anyone knew because it is quite hard to tell exactly by testing it without being able to instantly switch between the two... I am pretty sure they are the same but then sometimes I think that it has more lag with the GPU scaling or I may be imagining it lol...

 

[NirK]

Hmmm because I cant play properly in 16:10 now I am used to 4:3 but I also despise input lag. Need a new monitor but don't have any money

I don't really understand why it would cause lag because I am only scaling it from 1680x1050 > 1400x1050 so it is still 1:1 pixels just with the sides cut off.....

 

[NirK]

For some reason my display cannot select scaling modes and it stretches the image.

 

[NirK]

I can scale with ATI drivers and keep the aspect ratio....

eg. 1400x1050 4:3 with black borders on left and right.... My point was that doing this through catalyst CP seems to cause input lag