The remote access for Plex is extremely slow in other devices

[JaysPlex]

You do have an indirect stream, which is the relay Tom was describing

That means remote access is not configured properly

See what steps you can follow here

The Basics of Remote Access Troubleshooting

When it comes to remote access, there’s a lot of different factors which can impact your setup. Some are under your own control, others not so much. First off… there’s a dedicated support article on troubleshooting your remote access. I strongly recommend you have a look at that. Find below some additional remarks on how to troubleshoot your remote access setup. Review your internet access / remote access configuration It’s good practice to review if Plex gets the correct public IP address…