The one thing that irks me with Analog Lab and VCollection is that when I switch patches there's a pause before the patch is available, and the previous one and its effects cut out immediately on switching instead of the tails of the previous sound ringing though their decay.
There are hardware instruments much less powerful than my laptop. I think the Kronos - a good example - is less powerful than my Core i7 7700HQ. It doesn't do this, does it? I know there are other hardware synths that don't do this.
IMO I should be able to hold down a note, have those sounds stay playing, and switch sounds - even to another engine - without having the sound stop at all. At the very least have the sound switching be faster than the 1-2 seconds I experience. Even if it's a non-default options (I understand people have slower computers) it should at least be an option.
I've paid a great deal of money for your instruments (and controllers - I have a KeyStep and a KeyLab 61 mk2) and I see this as an egregious oversight