Stuttering video on android tv

Hi! Thanks a lot for your work, Jellyfin is awesome! I was a plex user. I tried to replace it on my android box, I installed the android app but the tv remote is useless on it, so I switched to your android tv app. The user interface is really cool, but no matter which video I play, it “stutters”. Its watchable but I get tired of watching quickly. There is no transcoding (my server is on kubuntu 18.04.3) , it shows that it does “direct play”. The same videos have no problem casting from my phone, same server. The android box is lan-wired and videos had no stuttering problem under plex. I tried to switch to an external player but I have a “path not found” error. Any ideas? Thanks a lot! :slight_smile: