Unfortunately when reviewing presets from Instruments in the Media Bay Cubase does not remember the instrument when selecting a new patch from the same instrument. Cubase will unload the instrument and then reload it in the background again before your newly selected patch is active.
What would be better is if once you’ve initiated the instrument in the background ,with your first selection, Cubase remembers and acknowledges if you are selecting a new patch from the same instrument and does not unload , then reload the instrument again. This all takes time.
I’m not referring to 3rd party instruments either. It happens with built in Steinberg instruments.
How do I come to this conclusion you may ask? It is because when you are reviewing presets from Halion Sonic 3 in the right hand zone Media Bay you can sometimes hear the startup preset Hexagon being reloaded again for a very brief moment before your new selection is active.