Samsung App crashes without internet

[labem 0]

I have a my emby-server and my Samsung tv on the same network.

Due to recent events, i decided to cut internet access for my TV (disabled WAN-Access on the router for the MAC of the Samsung-TV).

The TV doesn't load any ads anymore, streaming from the emby-server works. So everything is looking good.

Except: The Emby-App crashes every few minutes. It doesn't matter  which content i play, it freezes for a while, then crashes, then i can start emby-app again and it works, until it freezes again a few minutes later.

I tried to allow internet access and it worked again without issues. However, i'd like to keep my tv blocked. Can something be done about it?

Thank you

Emby-Server: Version 4.10.0.40
TV-Model: GQ65QN93
TV-Firmware: T-NKM2DEUC-2301.1
Emby-Client: Emby for Samsung 2.2.8 - reported as the newest available version
License: Lifetime emby premiere