Looks like I am not alone: System frequently crashing after GPU drivers update
And the bug report: [5.2/5.3][drm:amdgpu_dm_atomic_commit_tail [amdgpu]] *ERROR* Waiting for fences timed out or interrupted! (#934) · Issues · drm / amd
Unfortunately that bug was reported 2 years ago and the only workaround is to downgrade linux-firmware to 20210818.c46b8c3-1 with:
sudo downgrade --ala-only linux-firmware
If you don’t have downgrade installed: Downgrading packages - Manjaro
I am sad, but I guess I will have to try and downgrade, hopefully nothing breaks.
Currently using:
$ pacman -Qs linux-firmware
local/linux-firmware 20211027.1d00989-1
Firmware files for Linux