I use Premiere Pro CC 2014 with an AMD R9 285 card. The "Mercury Playback Engine GPU Acceleration (open CL)" option is only available if I have my AMD Eyefinity display option turned ON in the Catalyst control centre.
If I turn it off, next time i load up the project I get a message saying that the Mercury GPU acceleration option is not available and sure anough when i check that option is greyed out.
1) I don't like using the Eyefinity set up as it is not sharp due to me having 2 different sized monitors (24" and 22")
2) There have been times with the eyefinity turned off and the OpenCL option isn't greyed out, but when i close the file and re-open it isn't availiable.
Am I missing something ? My previous Nvidia card worked fine.