@rajil_s, at this point I think the issue is beyond what I can help with. I’m not familiar with LXD on Arch. To compound the issue, the 1030 card is unique in that it supports NVDEC and not NVENC. There could be more complication here than just simply getting everything set right on the LXD profile.
Plex with hardware acceleration on containers is very much a no man’s land right now. LXC on Proxmox seems the most common deployment here, but outside of that it’s going to be very hard to validate. I can say I’m doing LXC with passthrough ok a Debian container with Proxmox, but your mileage may vary a lot with such an infrastructure
