I’m glad this information didn’t head my way prior to downgrading the kernel. I may have been down yet another LXD rabbit hole. It’s useful to know the LXD on gentoo QEMU config is at /var/log/lxd/VM-NAME/qemu.conf - Thank you for highlighting this
5.4.242 will likely remain, and I can start a different topic for the strange plex nvenc container issue which is consistent on both kernels but functions fine in docker…