How to fix Plex pixel problem on DSM7 changing video codec h265

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

[@TheMrConstrictorShow]

Help! I have tried for a while now and the directory Plex Media Server does not exist inside my "home" folder. I am stuck. Is there anywhere else the Preferences.xml file could be located?

[@DIGIBITE]

Yes, DSM6 used to have Plex folder insid Home folder. DSM7 has it in a top tier next to linux system.