Michael, with all that enabled also try the " idle=nomwait " kernel
option If the upgrade to F2 doesn't work.

I have a similar BIOS and the same CPU. I had to enable all what you did
but this wouldn't work without idle=nomwait. See my post above.

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https://bugs.launchpad.net/bugs/1690085

Title:
  Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks

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