it does seem quite random these issues. I’ve had 2x MR816’s from the day they were released and have used them on 4 or 5 different machines without any problems at all. I’ve used them on macbooks OSX10.5 ,10.6/ mac pro same/ PC’s using windows Xp,windows 7 and a brief test on windows 8 all no problem.
Sorry i can’t be of more help.
HAve you dissabled the C1E states and any thermal throttling in your BIOS? that’s the only thing I’ve done to tweak my DAW, however I’m still on old hardware X58
MC