Hello Doctor83,
With 1.8.9 the rigs stops after 10-12 hours, and the 1.9.0 make to many compute errors any algorithm with vega 64 cards. The 1.8.8 was works fine. Please check what was the problem.
Cheers.
From 1.8.9 to 1.9.0 nothing changed in kernels, so i don't see a reason for more compute errors.
Can you give more info, a log would be the most helpful i can see almost everything from it.
Maybe you have problems with the embedded binaries (but i dont see any reason why would it cause problems).
You can add
--nobinaries in start.bat so they won't be used, try it.