Hi @fiona.
We have this problem as well.
Host CPU AMD EPYC 7313 running PVE 8.2.7 from Enterprise repo with pve-qemu-kvm 9.0.2-3.
The VM we are experiencing this with is a q35 machine with x86-64-v2-AES CPU running Rocky Linux 8.
Virtual disks (virtio-scsi-single, discard, iothread, io_uring)...