My Windows 11 VM with nvidia passthrough has micro stuttering with 64gb's physical ram it will cause a complete restart and with 32gb's of physical ram it won't completely reboot the host. But with either it will cause micro stuttering with 32gb's not as bad it seems with the 64GB's. Now I recently did a complete reinstall and had to start completely fresh since I didn't know about backing up config files for ZFS. I didn't have this problem with proxmox 7 but is now happening with 8. I can't really pen point if this is due to me going from a 5800x to a 5950x but I did all of the upgrades at the same time. With Proxmox 7 I had 14 cores dedicated to the 5800x cpu with no issues whatsoever. If I can figure out this issue it might fix the problem with the 64gb of ram also to complete my upgrade.
Ryzen 9 5950x
32GB's at 3200mhz on the MB QCL
Asrock Rack board
Gigibyte RTX 4090
Mellenox 40GB nic
Using iSCSI for game library
args: -fw_cfg opt/ovmf/X-PciMmio64Mb,string=65536
bios: ovmf
boot: order=scsi0;ide2;net0
cores: 28
cpu: host
efidisk0: VM_DATA0:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
hostpci0: 0000:2d:00,pcie=1,x-vga=1
hostpci1: 0000:2a:00.3
hostpci2: 0000:2e:00.0
ide2: local:iso/manjaro-gnome-23.1.4-240406-linux66.iso,media=cdrom,size=3947290K
machine: pc-q35-8.1
memory: 16000
meta: creation-qemu=8.1.5,ctime=1721075286
name: Window11
net0: e1000=BC:24:11:84:FE:39,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
parent: Post
scsi0: VM_DATA0:vm-100-disk-1,iothread=1,size=300G,ssd=1
scsihw: virtio-scsi-single
smbios1: uuid=Protect my license
sockets: 1
vga: none
vmgenid: Protect my license
Ryzen 9 5950x
32GB's at 3200mhz on the MB QCL
Asrock Rack board
Gigibyte RTX 4090
Mellenox 40GB nic
Using iSCSI for game library
args: -fw_cfg opt/ovmf/X-PciMmio64Mb,string=65536
bios: ovmf
boot: order=scsi0;ide2;net0
cores: 28
cpu: host
efidisk0: VM_DATA0:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
hostpci0: 0000:2d:00,pcie=1,x-vga=1
hostpci1: 0000:2a:00.3
hostpci2: 0000:2e:00.0
ide2: local:iso/manjaro-gnome-23.1.4-240406-linux66.iso,media=cdrom,size=3947290K
machine: pc-q35-8.1
memory: 16000
meta: creation-qemu=8.1.5,ctime=1721075286
name: Window11
net0: e1000=BC:24:11:84:FE:39,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
parent: Post
scsi0: VM_DATA0:vm-100-disk-1,iothread=1,size=300G,ssd=1
scsihw: virtio-scsi-single
smbios1: uuid=Protect my license
sockets: 1
vga: none
vmgenid: Protect my license