Hi guys, it seems no matter what I do I can't get over 18 intensity with 3 rx 580 8GB, system just crashes at 19 or more.

EDIT: seems to be that the --asm was the problem with my cards.  Got rid of that and am now upping intensity by 1 and checking for stability.  Right now I'm at 22, going to try to hit 23 soon.  Getting much better hash rate now.