can u please tell me your OC and are u under voltage or not ??
no OC and no under voltage - just all cards running with stock settings.
the rig is now running fine, almost 3 hours and stable with this hashrate (~1330 h/s)
that's weird have same setup up got only 890 h
How much Ram do you have ??
16GB RAM, a fast 128GB SSD (Samsung ~500 GB/s for R/W)
virtual memory set to 32768 kb - 65536 kb
and a i7-4770K @4GH OC on a MSI Z87GD65 (Gaming & OC board)
Windows 8.1 pro 64 bit
on the same system I'm runnig wolfs cpu miner with 4 threads giving me additional ~190 h/s