Thx Claymore!

My
Sapphire RX 470 4GB (not Nitro) x1  from 26-32 S/s genoil to 40-42 S/s claymores
Sapphire RX 470 4GB (not Nitro) x4  from 85-105 S/s genoil to 154-160 S/s claymores

Work without rejected shares and stable in 2 hours with latest AMD driver, win 10.
GPU bios modded, some memory timings but run stock cpu and memory frec
Nanopool stats confirm the speed upgrade

Latency littlebit higher than before from 100ms to 500ms EU server nanopool but working good!