Passthrough RTX 5090 CPU Soft BUG lockup, D3cold to D0, after guest shutdown

Trying some 4 extra parameters to see if it will help or not. Will report when issue happens again.

quiet idle=nomwait pci=nocrs pci=realloc processor.max_cstate=5 amd_iommu=on iommu=pt vfio_iommu_type1.allow_unsafe_interrupts=1 vfio-pci.ids=10de:22e8,10de:2bb1 initcall_blacklist=sysfb_init
 
Have a look at the attachment:
So the upgrading firmware did not help. I am looking for next steps. Already wrote to asrock support, also i will write to nvidia but i think it might be motherboard issue. And thinking what more can i do more.
Anyway i would like to thank you for your suggestion. If you need for example RTX5090 or 6000 to use for a while in VM then i do have datacenter on which i am renting those bu i can rent for free for some time if you would need it.
The scripts you sent i will check out later once i will have this stable.