(In reply to Sylvain BERTRAND from comment #67)
> > ...
> > Vulkan/DXVK
> 
> The bugs may be in wine/DXVK then. You should report to a bug to them and
> link
> this bug to theirs.

If any of you opened bugs on other bug trackers, please post a link here so we
can all contribute to both.

I did some test on my end and I can report the following:

System info:
OS: Ubuntu 18.04.2 LTS x86_64 
Kernel: 5.0.0-21-generic
Resolution: 3440x1440
CPU: AMD Ryzen 7 2700X (16) @ 3.700G 
GPU: AMD Vega 20 
Memory: 2650MiB / 64398MiB
OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.0.2

1. Power profile set to manual did not help
2. Mesa-ACO from valve seem to have helped quite a bit. So far, no system
freezes

I installed Arch on another SSD and will try to reproduce the same tests:
1. Plain Arch - crash or not ?
2. Arch with forced power profile - crash or not ?
3- Arch with mesa-ACO - crash or not ?