Diablo4 - not working anymore

[griebels]

Diablo4 / Battle.Net / Lutris worked very well at the beginning.
But, probably since patch 1.2, Diablo4 no longer starts. At least, no window opens anymore.
The process

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7481 ***** 20 0 15.6g 7.3g 2128 S 60.8 47.1 0:14.24 Diablo IV.exe

is running. However, nothing else happens.
Wine: lutris-GE-Proton8-14
DXVK: 2.3
VKD3D: 2.8
D3D extra version: v2
Esync/fsync enabled

CPU: AMD Ryzen 5 5600X
16GB Ram

Now I'm not sure if it's my system, Lutris or a Diablo patch.
I tried already different proton versions, but no success.
Modifying the settings didn't help either.

Always the same result. Starting in Battle.Net Diablo 4 results in the fact that shortly the play button changes from 'Playing now' to play. But still the Diablo IV.exe process is running and taking up all memory.

Anybode facing the same issue? Any tips are welcome