Long time lurker

I've been running into a ton of stability issues. I switched back to stock roms on my 290s and 480s are running with 1750>2000 straps. All stock clocks.

2x r9 290 4g
2x r9 290x 4g
2x rx 480 nitro+ 8g

2x psu totaling 1750w

Miner crashes after about an hour. Windows 10 with 1.1 -- Testing 2.0 now. Any advice? Tried messing with clocks. Too soon to tell results. Any good way to troubleshoot win10 crashes? Nothing in event log.

Thanks!