Ok, some developer colleagues responded, and I have a couple things to try.

First, if you send us a frozen .sgu file (frozen meaning with all tracks frozen) we can take a look at it to see what's going on. You can email that to support@pgmusic.com.

One possibility is that you may have accidentally checked "half-time" in the RealTracks picker, which, at the tempo of 60bpm, would treat the RealTrack at 120bpm, but then STRETCH it down to 60, causing it to sound strange.

If that's not it, another thing to try would be download and re-install the RealTracks installer to that contains RT set 322 from your account. That could solve the issue.

In any case, a frozen .sgu file will help us figure out the cause of this mysteriously troubled Resonator.