Hello guys, so long story short I have mini rig with 2x1070 and 1080. 1080 is on top water-cooled closed loop. 1070s are evga acx. So middle card got no air to breathe. I decided to buy riser and take my bottom card even lower(at board in full tower case) , move middle one by 1 slot to make some room between cards. So I connected bottom one  to bottom pci and moved it closer to psu, moved the middle one as well. All looks good. Few freezes and eventually system starts. Card gets recongnized after few mins, done DDU, reinstalled GPU drivers. Problem is then I'm mining even desktop lags a lot and mining performance is like 10 times slower on all cards. Cards stays basically in Idle clocks too. Tried updating chipset drivers, setting bios default, pci gen 1/2/3 nothing helps. Could Windows reinstall help? Maybe it has to be installed while that pci-e card connected? I'm out of ideas. For now I put cards back to sandwich, obviously middle one can only be used while I set 75w limit, even with that it goes to 75 degrees of celcius. MB p9x79 pro. 4930k. Any help appreciated. Maybe someone could offer some live Linux which requires minimum settings before I can try mining and check performance? Thanks again.