Thanks a lot, man here is what I got with V11.00

Both dual mine XMR and FCN

2 x Sapphire Nitro + RX 580 4GB (overclocked with stock bios)

XMR: 12/20/17-07:17:43 - New job from fcn-xmr.pool.minergate.com:45590
1204   target: 0x00057744 (diff: 11990H)
1204   XMR - Total Speed: 1390 H/s, Total Shares: 4095, Rejected: 0, Time: 11:30
1204   XMR: GPU0 696 H/s, GPU1 694 H/s

Compared to 550 H/s average per GPU in V 9.7 (did not use V10.2)

AND:

2 x Sapphire Nitro + RX 580 8GB  (overclocked with stock bios)

XMR: 12/20/17-00:17:39 - New job from fcn-xmr.pool.minergate.com:45590
1520   target: 0x0004f01b (diff: 13272H)
1520   XMR - Total Speed: 1619 H/s, Total Shares: 1044, Rejected: 0, Time: 02:38
1520   XMR: GPU0 804 H/s, GPU1 815 H/s

Compared to 750 H/s average per GPU in V 9.7 (did not use V10.2)