Okay, so I recently decided I would like to play a few games on my HT setup and went ahead and installed a few things from both Steam and GOG. Here is where it gets strange. I'm experiencing these weird pauses/hitches on the display and sometimes crashes on anything 3D from Steam. The audio is unaffected as it continues to play normally. I turned on monitoring through Afterburner and can clearly see what looks like throttling as fps drops to 0 and GPU utilization drops as well.
Here is where it gets stranger. I installed Alan Wake & Witcher 2 from GOG and there are absolutely no problems with either. No throttling, constant utilization. Has anyone else seen anything like this and hopefully knows of a fix?
A little background on my system:
-Corsair 650W HX power supply
-Geforce 560 Ti 1024MB RAM (tried 3 different driver revisions: 295.73, 301.24. 304.48)
-Intel i5-2500 (turbo enabled)
-Asus P8Z68-V LX motherboard
-Mushkin 8 GB DDR3 1600
-Win 7 x64
After a lot of screwing around in Windows and in the BIOS including disabling Speedstep, moving my Steam install to 3 different drives (one of them my OS SSD which still presented the same problem) I decided to do a full format and fresh install but the issue persists.
I'm running HDMI audio/video to my Yamaha RX-V667 receiver which passes video to my Sony HW15. Movies, TV, games outside of Steam, EVERYTHING else plays back without issue. I've scoured the Steam message boards but so far have come up with nothing so I'm hoping the more home theater minded folks here might have a solution.
EDIT: I should also add that the GPU temp is never going above 60 C so it shouldn't be throttling due to heat.