After several hours of reading this forum from around page 250 to found a cure to my problem and to don`t waist your time with "maybe" trivial questions I get to the conclusion that I cant solve this problem alone.
So since day 1 I got some issues with hashrate. I am using 6x Sapphire nitro+ rx 580 8gb gpu and getting 17Mh/s a card mining Eth using eth miner which is very low and I realized its even abnormal. This hasrate even after I used the oc settings, before oc I got around 14-15 Mh/s. After 3 days of mining nothing was changed, the only good news, the system was stable. After reading this forum I found out that there was the Dagfix issue with rx cards so I used the red icon on the console to update the os with the dagfix. Since than no rig. I know, now I have to reflash the original os to the usb and reboot the system with it but probably this not solve my original problem of very low performance. (Also I tried the cards in windows and without bios and oc flash they are pulling 24Mh/s each.
Hope someone can point me to the root of this problem. Cheers.
send me message, I will try to help as much as I can.