17.30.1029 crimson beta

But I had to lower the mem speed from 2020-2080 to 2000 in all cards. If mem speed if higher the same situation shows up.

This crimson driver seems to be very sensible for modification of gpu voltage, memspeed parameters, so after each modification system restart is needed if some cards shows 0mh/s.

And don't forget to turn off automatic windows driver update with gpedit - win10 is keen to update this driver asap.

This means 29.9 mh/s for now instead of 30.9 mh/s.

I will look for other options later.

Best Luck for you,

 azza_