Nope, it shouldn't be as long as the FPS is constant at 1000.
I have /maxfps 500 since FPS goes down to around 550 if I look at a certain direction and stand at a certain spot in ac_power.. :D
I have /maxfps 500 since FPS goes down to around 550 if I look at a certain direction and stand at a certain spot in ac_power.. :D