I have the BTC-37 motherboard using a 750W Antec powersupply to power all 8 slots. I have 7 Dell RX 550 4GB cards installed and all of them are recognized by NHOS. Everything works nearly perfect right out of the box. My current issue is getting the cards to perform at an acceptable hashrate. Currently getting 2.2MH/s on KAWPOW. I installed one RX 550 in my Windows 10 PC and got 15MH/s without any mods. Therefore I know it isn't the gfx card that is the issue. I disabled all but one of the RX 550s on the BTC-37 and still getting 2.2MH/s. Doesn't rule out the mobo, but leaning more towards NHOS now. I downloaded SMOS to try out based on what others have said.

Just wanting to see if others have had this issue or if they didn't, what did they do differently.