i5 2500K @ 3.3GHz
EVGA GeForce gtx 570
G.SKILL Ripjaws Series 8GB DDR3 1333
BIOSTAR TZ77XE3 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
CORSAIR Professional Series HX750 750W 80 PLUS SILVER Power Supply
Crucial M4 CT128M4SSD2CCA 2.5" 128GB SSD
Western Digital Caviar Black WD1001FALS 1TB 7200 RPM
COOLER MASTER Hyper 212 CPU cooler
Corsair Carbide series 500r case
When playing Deus Ex or Half Life 2, after about 20-30 minutes of gameplay (running at 45-60 fps), my game almost immediately drops to 1.9 fps. This renders the game unplayable and if I alt-tab out of the game right when it happens, and then alt-tab back into the game, it immediately resumes running at 60 fps. This is on the default settings applied when starting the game and a resolution of 1920x1080.
I was running all the latest drivers for nvidia (301.42 I think), and I tried to revert to the older drivers (296.10) from March. Still had the same issues. This is all a clean install of windows and first time using this card for this motherboard. I ran a 3dmark11 test and got an ok score of 5200 for gpu and 5800 for cpu. I can link the actual score page when I get off work if necessary.
It is interesting to note that when playing tf2 or Civ 5, the problem does not occur at all. Yesterday I played tf2 for ~2 hours and it was fine. I then tried Deus Ex, and it dropped to 1.9 fps after 20 minutes.
Any advice on how to solve this issue would be greatly appreciated. Thanks a lot for reading.
i had a similar issue with an older nvidia card, when it was overclocked after some time gaming the clocks would go back to the ones it uses to save power, and that is way performance declined, when it was stock i did not had that problem