Hi!
I just wanted to mention that apart from the particularities of my setup, the feedback issue is illustrated also by other Cabbage plugins, as described recently. Rory introduced the reserved channel CHNSET_GESTURES to resolve this.
Now we can either have DAW automation playback working while internal parameter changes (by chnset) are not broadcast to the host (default, chnset 0, "CHNSET_GESTURES") or we can broadcast changes, e.g. triggered by a preset change, but no automation playback enabled (chnset 1, "CHNSET_GESTURES"). Perhaps one could refer to the two states as the automation playback and record/performance modes. For me, this works fine since I don’t need playback and record/performance modes simultaneously. I’d refer you to this Rory’s example: AutoTest.csd (889 Bytes)
I have some issues with AUs (which might be particular to my setup) but it works perfectly with VSTs.