Greetings

I am running a fairly old rig on debian testing with 2 gpus and want to run
5 monitors.
The 5th is hdmi connected and is a 4k monitor with the other 4 all being
1920x1080.
After I installed the 4k monitor I had regular graphics sub-system freezes
(won't come out of suspend typically) with a normal being a system reboot
at least once every 24 hours.
I filed a bug report. Have subsequently unplugged the 4k monitor - - - - a
lot of headache rebooting and setting up the machine at least 1x per day.

Recommendation is to download and install even a 5.14 (still in beta)
kernel.

The newest kernel (changed just yesterday) for debian in debian
experimental is a 5.13.?? version.

Dunno if I want to try a beta kernel (sorta scared to in fact).

Suggestions from y'all?
(Y'all, or at least quite a number of you, have a lot more experience at
this than I do.)

Please advise.