Plex not working remotely on Synology NAS

After much troubleshooting, this was what made it work for me:

1. Disable Jumbo Frames in network settings in the Synology NAS (DSM)

Done

Plex Synology and Chromecast stuttering buffering

Had stuttering and buffering problems.

Added Chromecast.xml (see below) to
Plex/Library/Application Support/Plex Media Server/Profiles
fixed almost every problem


Setup:
Synology Diskstation
Plex Media Server
Chromecast

File to download here: http://www.mediafire.com/view/ly674y942dpedhf/Chromecast.xml


Don't forget to restart your Plex Media Server!