Asus B250 with MSI RX580 help?

[rickinmd]

Ok, here's my set up.
I have 3 open-air rigs each one is identical.

Hardware:
Asus B250 Mining Motherboard
8GB Ram
250GB Samsung SSD
11 MSI RX580 GPU
Windows 10 64
MSI Crimson drivers
Claymore Dual v11.5

Everything is working fine but I can only average about 18Mh/s on each card.

 I can't install Wattman. 

I tried using other drivers but it will only let me use Crimson drivers and software.  In the Crimson I set it for compute away from graphics and still nothing good. 

I tried AtwinFlash and it won't take.

Any suggestions on what I'm doing wrong would be grateful other than slams on Asus or the GPU's.  Thanks