I guess I tried about 40-50 new .seq files in RB over the last 3 nights on different machines with different hardware. Every single playback sounded as you wrote like "static noise". If you'd try very hard you'd recognize the chord changes but that's a doubtful pleasure. The playbacks are just useless. The strange thing is that in BIAB everything is fine when generating RealTracks under ASIO.
Unfortunately as a guitarist ASIO is the one and only driver model of choice for me. And I wonder if there's any audio interface left in the outside world that still supports MME? For me MME is really something of the very past and no option at all. (Just think of the nasty "l.....y" word.)
Anyway, I wrote a mail to
support@pgmusic.com. I'll wait and see what that brings. But I have to say: I am almost done with RB.