Hello!
I cant mine Etc nor Eth with my Vega64. Trm v0.10.9-win Got message:

[2023-04-20 13:53:18] GPU 1 DAG allocation trying 8176.0 - 512.0 = 7664.0 MiB.
[2023-04-20 13:53:18] GPU 1 ERROR - failed to allocate ethash DAG buffer, tried down to 4088.0MiB.
[2023-04-20 13:53:18] GPU 1 thread exiting with error.

Under Phoenix miner I can mine Eth without problem.

I have enough Virtual memory, 60 GB (PM worked with 40GB, too).
I tried even to disable/enable my Gpu's, but nothing helped.