How to fix Plex pixel problem on DSM7 changing video codec h265
PLEX dsm7 fix
control Panel Terminal- Enable SSH
-open common line (Mac Terminal/ Win Putty)
ssh 10.0.4.105
-log in
sudo -i
cd /
Find -name PlexMediaServer
cd var/packages/PlexMediaServer/home
cd 'Plex Media Server'
vi Preferences.xml
SHIFT + $. To go to END
Press i to switch to editing mode (INSERT on Windows)
Add VaapiDriver="i965"
Press ESC button to leave edit mode
Press the ESC key, then hold the Shift key then press Z twice
Reboot