The most common cause of freezing up is GPUs overclocked too much or BIOS modded too much. Or a bad riser.
You should check those two things.

MSI Afterburn settings are:
Power Limit 74
Temp Limit 72 Celcius
Core Clock MHz +0
Memory Clock MHz +0
Fan Speed % 0
and BIOS I just upgraded to latest one from MSI site, and changes PCI settings to gen1/gen1 and activated the advanced 4G setting. I will change risers now and report back.
Swap file?
Swap file is 1367/16400