I use plex daily on fire tv and have not had any issues with seeking forward or backward. I use the “skip back 10 seconds” with the left button all the time whe

I use plex daily on fire tv and have not had any issues with seeking forward or backward. I use the “skip back 10 seconds” with the left button all the time when I miss some dialogue. When speaking of Plex you have to mention the client, it runs on almost everything but some clients work better than others.