Using Plex Web App (chrome or firefox) choose SRT external subtitle.
The plex web app cannot direct play with AC3 5.1 or DTS 5.1 (ironically it can direct play AAC 5.1)
instead it will be direct streamed with audio converting AC3/DTS 5.1 to a stereo (aac).
Once that happens. the Plex Web App will convert SRT external subtitle to ASS format. With that, the leak will occur where it tries to render the subtitle (showing subs on the media) and gets stuck in an infinite loop.
if using aac stereo audio. it will direct play and use SRT subtitle without changing its format to ASS.
I can confirm this leak happens in Windows and Linux. I did not test this on Mac server as I’m only pointing out the steps to reproduce it as I see the guys here linked it to the same problem.
Apple TV device would use WebVTT same as LG TV.
Samsung TV needs to convert to ASS alongside plex web app if used with AC3/DTS 5.1 as audio source.
if the device source changes the SRT external subtitle to ASS, the leak would occur
