Built our new rig
Mainboard: Asrock H81 BTC PRO 2.0
GPU: 6xRX580 SE
Low hashrates only 19,6 MH/s per card.
Didnt mod or do anything on the bios.
Im running Smos ( simple mining OS )
Please help.
You found the solution to your problem while typing this thread, you didn't even have to post it.
These are perfectly normal hashrates for stock graphics cards. You should modify the BIOS using optimal timings and undervolt to achieve the best performance per watt ratio.
Otherwise you're not gonna be getting anything higher than 20-22MH/s no matter what you do.