Frame Rates dropping in Quake 4

[Bradtechonline]

Is it normal that in 1024x768 4x AA 8x AF that in some parts of Quake 4 single player mission it drops down to 30 FPS? I got it on max detail inside the game also in that resolution.

 

[kypron7]

Do you have the texture quality on Ultra? you need 512 mb video ram to run highest texture setting properly, but it looks no different than the second highest setting. I used to play that game at 1024*768 maxed (except textures) on a geforce 6600 gt and an athlonxp 2700, and it never slowed down

 

[Bradtechonline]

No I got it on 1024x768 High

4x AA in nvidia display driver control panel
8x AF in nvidia display driver control panel
performance is on quality
It's only in some areas like when I look outside a window outside, it will drop down to 30 fps.