I found that having the output on or off didn't seem to make a difference. Still doesn't. I'll turn it off from now on though.
You were right, I didn't assign anything to ACT at first. I didn't think you had to when you'd be using ACT Learn after and making the connection there after. I did that and it actually worked like it should!
BUT it is fussy with VST3... it shows it was mapped automatically when you select a plugin, it shows assignments can be made, it shows values changing when I move the knobs,
but until I actually click play, nothing updates. VST2 updates plugins without having to click play first.
I wish ACT would let us import a picture and then manually apply controls over it, so we could get a visual representation that matches what is actually in front of us. The VI49 editor is like that. The VI49 has 12 knobs, so how would I be able to assign the extra 4 for example?