# Plex struggles to transcode

**URL:** <https://forums.plex.tv/t/plex-struggles-to-transcode/725978>\
**Category:** Plex Media Server\
**Tags:** server-unraid, plex-web, subtitles\
**Created:** [July 1, 2021, 8:40pm UTC](https://forums.plex.tv/t/plex-struggles-to-transcode/725978 "2021-07-01T20:40:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![SMARlaT](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/smarlat/32/245075_2.png) [@SMARlaT](https://forums.plex.tv/u/SMARlaT)\
**Post date:** [July 1, 2021, 8:40pm UTC](https://forums.plex.tv/t/plex-struggles-to-transcode/725978/1 "2021-07-01T20:40:36Z")

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Server Version#: latest docker from plexinc/pms-docker  
Player Version#: Firefox 89.0.2 - Plex web

I have no problems to transcode my 4K 10bits HDR Files on a Plex web player but when I add srt subtitles Plex is struggling. I use of course hardware accelerated transcoding with and Intel® UHD 630

No subtitles, no lags on the web player  
 ![image](https://global.discourse-cdn.com/plex/original/3X/e/f/efc01f176378076336a978c8a7ce1067eb73344a.png)

With subtitles, it plays, stops and loads every 10 seconds  
 ![image](https://global.discourse-cdn.com/plex/original/3X/3/0/300e9233c83772dce226fc16f00657cc570c675e.png)

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [September 29, 2021, 8:40pm UTC](https://forums.plex.tv/t/plex-struggles-to-transcode/725978/2 "2021-09-29T20:40:41Z")

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