25.04.2 was still using Incus for the containerization system, IIRC, and things will be changing a fair bit in 25.10 back to a libvirt-lxc driven solution. I’m not sure if that will change things, but by “removed all the nvidia packages” you mean from the container, right? Or did you remove them from the TrueNAS base installation?
It might be that the CodeProject.AI container is build to target that specific runtime/version, and the earlier 550’s aren’t compatible because of bundled CUDA modules or similar. You might still have the same problem with 25.10 because we went to 570.172.08 and I think CUDA changed in 580 again.
We build the NVIDIA drivers at compile time into a systemd-sysext - some other community members have experimented with updating or changing the drivers - NVIDIA compatible driver test for TrueNAS 25.10 “Goldeye” - #16 by JeremC82