Quoting Beatonator
Very odd. They were both running Win 8.1
Did they also get the enormous launch delay? It was something I ran into on 8.1. Didn't test much more. Can't use 8.1 because dwm vsyncs everything.
One thing to check is the "selected adapter" in the stock RF launcher. If it's set to the wrong card or the wrong output on that card you might get CreateDevice failed. The setting was overlooked and not included in the PF launcher.
Also it doesn't label anything so that's fun.
