Stuttering when remuxing

[bobnahara]

Have determined its a codec issue with browsers. Don't know why I didn't try this in the beginning = just opened the video file directly with chrome/firefox - same issues.
The issue is that I'm using sonarr/radarr and this is stuff that came in with them. Seemingly a lot of dropout content for some reason.
Is there a way to just say no remuxing - if you cant direct play transcode the damn thing.

Tried updating the user permissions but that didnt seem to work.