I sometimes get an intermittent issue with the spinning beachball in Logic. This beachball remains for only a few or some more seconds (it depends), then the plugin becomes responsive again.
Interestingly, in Ableton Live this same Audio Unit of Vital doesn’t seem to show that issue, neither does the VST.
Sure, others have posted already (in multi-themed threads that is), but a dedicated thread about this issue is in order, I think.
My computer system:
Mac Pro cylinder “trashcan” 6-core 3,5GHz with 64G RAM, SSD’s, only one (older) monitor screen, macOS Mojave 10.14.6, Logic Trial 10.5.1, Ableton Live 10.1.30, Vital 1.0.3