Plex + Nvidia + Handbrake

Hi all,
I’ve been having issues with Firestick and AndroidTV skipping ahead randomly.
My setup is Plex in Docker environment with NVIDIA Hardware Transcoding.
I came across and article that suggests to add Handbrake to the mix but honestly I have no Idea how to integrate all three.
Any suggestions or ideas?
Many thanks

Which Plex do you have installed? Have you added your GPU correctly and confirmed it is using the GPU to transcode? Also is your mount stable? Do you use the service mount or container mount?