sorry for my silly question but I did not find a way for the moment (or I did not notice any related information in the manual or forum).
My ultimate aim would be unplug/temporarily disable/turn off all VST Instruments (not inserts or plugins in the Mixer) in one time in order to save the project in that condition avoiding waiting time due to the sound libraries loading process the next session.
Then I should be able to turn-on all of them in one time again and save the project in the original setting.
I would program a key command in case.
Thanks for any suggest!