I have similar problems with my X11SSH-CTF board and PVE 4.4 :/
with vm config like this:
machine: q35
hostpci0: 01:00.0,pcie=1
The LSI 3008 SAS Controller constantly resets and system hangs in iowait ...
With no "pcie=1" all seems to be ok, except a great performance drop:
I get only ~50...