SOLVED: Low Transcoding FPS with Intel A380

[TheDreadPirate]

You are definitely using QSV in those logs.

Can you clarify if Ubuntu is a VM or LXC?

You linked another post in your opening. If Ubuntu is a VM, did you ensure that the linux-firmware package was installed?

Code:

sudo apt list --installed | grep firmware

If Ubuntu is a LXC, you will need to ensure that the non-free linux firmware package is installed on Proxmox.

Code:

sudo apt list --installed | grep firmware-linux-nonfree

You may also have to ensure that the HuC and GuC firmwares are actually present as that other user noted that HuC was missing on their system for some reason.