COD4 Low FPS

FrostedNipple · 2 Jul 2008 at 21:24

In mp, when i first boot, i will get a decent fps avg about 80, but then if i play other games, still with a decent fps, but then go back to cod4, i will get an unplayable 5-15 avg fps, however if i go back to other games i will still get a decent fps. What's my problem, and how do i fix it?

FrostedNipple · 2 Jul 2008 at 22:05

this is the only other problemi could find, with the exact same circumstances

http://forums.whirlpool.net.au/forum-replies.cfm?t=1005889

FrostedNipple · 2 Jul 2008 at 23:03

from some bloke on another forum

Vsync causes highly erratic behaviour where frame rate is concerned, if your frame rate isn't significantly higher than your monitors refresh rate (60hz in most cases) then vsync artificially limits your frame rate.

Essentially to sync every frame at 60hz you need to be running 60fps minimum (remember fraps is an average) if your frame rate dips much below 60fps then Vsync will force your frame rate to 1/2 of your monitors refresh rate (30fps) These quick dips in frame rate might only be to 50fps normally but with Vsync on you skip entire frames and the frame rate is forced down to the next whole fraction, so if you cant manage 30fps it drops to 1/3rd or 20fps and so on.

Best bet is to lower the settins a bit so you're always dead on 60fps, this will require an average frame rate, of at least 80fps or so, maybe higher.

Alternatively you can enable tripple buffering which helps smooth out the frame rate but I'd advise against this since it causes huge mouse lag.

i turned off v-sync, did an alt-tab and my fps was back to normal.

Who here uses v-sync?

Devil_Spawn · 2 Jul 2008 at 23:14

FrostedNipple said:
from some bloke on another forum

i turned off v-sync, did an alt-tab and my fps was back to normal.

Who here uses v-sync?

i would blame it on the alt+tab. vsync will not cause a problem that bad.

i use vsync all the time!

FrostedNipple · 2 Jul 2008 at 23:25

the point is though, it would be good, then all of a sudden, go bad, and the alt-tab fixed it slightly, then i turned off v-sync completly and alt-tab'd and now it's completely fine.

Puppetmaster · 3 Jul 2008 at 08:12

i've always tended to use v sync since hl2 and bf 2 as i used to get some tearing, so automatically put it on on every other game. I think i should try cod without it.

chronic86 · 3 Jul 2008 at 16:38

never used Vsync my self, allways have it set to off... not had any problems with cod4 or any other game for that matter

Dup · 3 Jul 2008 at 16:40

I use v-sync on my home PC without issue. On my work laptop, COD4 was iffy fps wise till I updated the drivers for the 8400M card in there. Runs OK now.