I also have good results from v2.
My r9 290s are doing 58-61 sols
My 470 8gb is doing 48-50 sols.
Are your 290s modded?
can u share gpu model and cpu
1 x Sapphire R9 290 tri-x not modded but overclocked to 1100 core clock
1 x Sapphire R9 290 dual-x same as above
1 x MSI RX 470 8gb modded. Used 1750 timing for both 1850(i think or maybe 1875) and 2000. Core clock is at stock 1242 but memory is overclocked to 2000. Stock is 1650 which is really bad.
CPU is an old i7-2700k 3500 sand bridge.
Another improvement.