Buffering when subtitles enabled

I’ve recently decided make MKV’s of my Blu Ray collection and save them in their original file size so I could get the best viewing experience possible. The files have been saved on my DS416 Play NAS which has an Intel Celeron N3060 1.6Ghz processor with 1GB of RAM. The NAS is connected to my Unifi switch at GB speed. When I tried to watch the files through my Samsung Q9 TV (which is also hard wired to my switch) I have no issues until I try to switch on subtitles, then it buffers every 10 seconds. I know there are a few topics for this issues but they seem to be old so was wondering if anyone else was still having this issue or if a fix has been identified?

It means that your server needs to transcode the video, in order to burn-in the subtitles.
Either disable subtitles or convert them to SRT format.

Thanks OttoKerner, no wonder its struggling when its got to transcode the whole video again on the fly. Dont have the most powerful of NAS boxes to cope with this kind of demand.

If I was going to try and burn-in the subtitles to the original file but I’ve only known of handbrake that can do it but that always reduces the file size (never found an option to keep original file size), do you know of a way I can burn-in the subtitles without changing the original file ?

No, burning-in subtitles always means recompressing (=transcoding) the file.

Tip: Performing OCR on the subtitles and converting them to SRT format might be faster than recompressing.

Or you go to the ususal suspects and download a ready-made subtitle (with the danger that the subs on offer might not exactly fit your release.).

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