I have 12 evga 1070 SCs on Win10 Pro using nvidia inspector to OC to 100/450 85% power. each card using around 123 watts. and my SOL/s is about 470 in EWBF 0.5

I previously had this machine running on Win10 Home, same hardware, using EWBF 0.4 I'd get about 470 sol/s then i upgraded to 0.5 and was getting 505-515 sol/s. but formatted ssd and did a clean install of win10 pro and now EWBF 0.5 is maxing at 475 sol/s and not over 500 as previously achieved with same OC settings. I'm at a loss.

I also updated B250 mining expert from bios 1010 to bios 1026, or whatever the latest BIOS is. Could this contribute?