This posting is older than 6 months and can contain outdated information.
Hi Felix,
I have a MacMini late 2012 i5 with 4GB RAM running OSX 10.9.5 (13F34)
I use the built-in bluetooth adapter from the MacMini. IR is disabled in Remote Buddy
Currently I'm using Remote Buddy 1.26.1
The plex activity in the harmony uses the PS3/Remote Buddy device not a plex device. I also use your recommended power settings
I'm using a custom startup sequence for the mac mini so it always boots remote buddy, plex media server and finally plex home theater. The Macmini never powers down or goes into standby.
When I turn of the plex activity the mac mini always stays on with plex hometheater active.
It happens that when I start the plex activity for example a day later the bluetooth connection is lost. It comes back but messed up. The keypress response is very slow and after a few presses plex is overloaded with commands and for example the main menu keeps scrolling.
Cheers, Rudi.