Transcoding to 1080p limited

Server Version#: latest
Player Version#: different

Hey everyone,

last week I installed on my QNAP TS-673A a Quadro T400 with 4 GB VRAM. Every Transcoding, even selected 4K 20 Mbps gives out 1080p. Can anybody give me a hint what I’m missing?

What’s the resolution of the player device?

Plex/web doesn’t have 4K output settings.

Resolution is native 4K, it’s on an Xbox Series X