@andrew , what latest drivers u use for amd?
win10-64bit-radeon-software-adrenalin-edition-18.8.1-aug3.exe
for now
I tired 3 different drivers
CATALYST 15.12 (recomended for Claymore) slowly, but It need less energy
Win10-64Bit-Crimson-ReLive-Beta-Blockchain-Workloads-Aug23.exe (recomended by russian telegram comunity)
win10-64bit-radeon-software-adrenalin-edition-18.8.1-aug3.exe (lates from AMD site)
It works fine under Windows 10 on 2 of 3 different PCs