Hey all, I got my 5970 about a week ago, and have been using catalyst 10.5. I tried 10.6 however that driver screwed up my display. so I uninstalled it and installed 10.5. I have been able to run DIRT 2 at 1920x1080 maxed out with vsync on at 60 fps.
After starting it up again yesterday, I noticed slight freezing when going though menus and loading screens. I ran the benchmark test and found that my minimum was 32 fps, but the previous day was 59 fps.
How could performance drop if I didn't install anything or change any settings? Is there a way to check if the cards is being used completely?
did you use driver sweeper when you removed old drivers? if not then use it and remove the drivers and then install the new driver
download gpuz and see the clock speed at which it runs when you do benchmarking it should jump from low power clocks to high clock
the 5970 has two GPU's, does the game support this? maybe this could be the problem, once the one GPU is pulling to much than it will let the other GPU for some "help"....
maybe the game doesn't support dual GPU simultaneous processing?
just my thought
since technically a 5970 is pretty much 2 5850s on one pcb, it doesnt really suprise me that one gpu is basically idling for all intents and purposes, my 5850 maxes out DIRT2 at 1920x1080 on ultra settings, and typically stays around 60 with vsync on, so unless you hit a really rough area i dont see why the 5970 would use both, especially since you are essentially "capping" your framerate, now to the original post, im not sure why you have a sudden decrease in performance, could be many things, but if you installed the card like new then i dont see how it could be a driver issue