Project Reality Forums

Hi,

Recently installed PR and it runs fine in general (40-80fps depending on the map and location). Initially when the game loads I can use acog/sniper scopes, thermals and supression/injury effects but then a few minutes into the game everytime I scope or use thermals or when under suppression or dying my FPS drops to 15.0 exactly and doesn't move. In this case iron sights still work fine and the issue can be temporarily fixed by alt tabbing out then back in again but 2 minutes later its back again.

It happens regardless of my settings just slightly less severely when using lower settings. I have the latest graphics drivers and my PC spec is

Core i7 920 d0 stepping
OCZ 6gb pc3 12800
Asus p6t mb
2x Asus nVidia 8600GT
Corsair 850W psu

hab the same issue today on beirut, but just some minutes and then it was gone. was the first time that happened to me.

That 15 is just the lowest the ingame number will go - your fps are probably even less. You could use Xfire or Fraps to get the real FPS but this wont solve your problem.

I suggest to try without AA and SLI mode off.

This can be an overheating issue as some systems will slow down the clock rates of components as they overheat. Check your temps, clean the fans.

I realise that now in fraps it drops to single figures.

As for overheating its definately not overheating as I have corsair h50 push pull cpu cooler with an antec300 case ambient temperature is usually about 20 degrees. I also have had overheating problems before when overclocking my gpu's for crysis in my old case and It produces pixel noise on the screen when it occurs.

AA is off and I have tried it with sli off and in different sli rendering modes but to no effect.

It definately strange its only when there is some sort of overlay effect that it does it. It goes from like 5 or 6 to 60 in an instant between scoping.

To see exactly what i'm talking about you can look at this video. Bearing in mind that fps is a lot lower recording at full 1920x1200

I appreciate you taking the time to help, I'm all out of ideas.

the first thing i thought was your resolution and your graphic card's ram. keep in mind that even if you have 2 gpu's it only uses 1 gpu's vram worth. you wont have double, they each use their own.

but i could be totally wrong.

I would recommend logging cpu and gpu etc usage/heat and then reproducing the fps drop and checking that log to see which component is holding you back, if any.

This might also be a driver issue. If you already have the latest drivers using older ones might help.

@illidur: I am not 100% but from the system readins I get it appears you are right about the GFX-RAM not being added up.

Thanks for your posts guys think I've sorted it now.

I checked GPU usage using evga precision and it appears that the second card wasn't being used much usage was 95% in gpu 1 and 10% in gpu 2 so I tried alternate frame rendering 2 again and it seemed to fix it must have tried that when I had bf2 texture problems.

The ram wasn't really an issue before but after the fix it did cause a bit of sticking but it was marginal and i solved that by overclocking my gpu memory to get more bandwidth. Must be due to the ram duplication for alternate frame rendering.

Cheers again

cool see you ingame then

also you may like this program for your SLI settings and FSAA.
NVIDIA Inspector 1.94 download from Guru3D.com