So if I change the psu since I do have a REVOLUTION87+ 1000W psu all the problems should go away? I haven't overclocked the miner and all the other settings are default.
That is good PSU based on jonnyguru. But it's not single rail, it's have four rail. Each rail can deliver 30A.
But the connector divided to V2, V3 & V4. Each connector have 2 x 6 pin pcie connector which can connect to one blade only. Lets say one blade use 170watt(14A), then you are wasting 16A on each rail.
Single rail PSU is the best choice.