Buffering in streaming rclone crypt from plex to LG smart tv

Please check the bandwidth charts below - when streaming to the TV I get bandwidth usage of 5 Mbps constantly (I am streaming a 10 Mbps file), which leads to frequent buffering pauses. When I stream to the PC through Plex HTTP, I get several spikes of 50+ Mbps.

So, I am guessing this is an issue with the Plex TV app, rather than with Rclone. Anyone here went through the same?

Cheers,

Streaming file in Rclone drive to TV:

Streaming file to Rclone drive to PC: