I have some msi rx580 armor 8gb oc video cards that just don't seem to work good in linux.  I just tried hive to see if they would work, but they don't.  in windows they get 30mh/s but in linux they get about half that.  My other cards powercolor red devil rx580 8gb work fine.

I have flashed the roms on all of them with oc and everything (both the msi and powercolor)

the msi cards run on hive at a rate of 16.41, and the powercolor run at 29.7

If you have any ideas on what I could do to get these msi cards to work, I would be grateful.  I have a second mining rig with 6 of these on it, but if I can't get them working in linux I will need to stay on windows.

Thanks!