Plex always transcoding on Fire TV Stik 4K Select

Hello.

Plex player for amazon Fire TV Stik 4k Select always transcoding video.

Simple .mkv with h264/h265 video with lower bit rate (aprox. 7000kb/s) always transcoding.

Never direct playing it, always if the fire tv app is select direct play.

Same videos is direct playing in others devices as old samsung ju7000 tv.

Thanks in advance.

Expected. The Vega OS devices have limited capabilities.

so is possible that in a near future Stick TV 4K Select works well?

If still within the return window, then do so. Acquire a device that runs Android TV such as the Fire Stick 4K Max Gen 2 or one of the Onn devices from Walmart.

But apps like Movistar+, Netflix, Youtube… all of them work well.

Only Plex is working poor.

Thanks!