Hi Paolo!
>> First of all, I'm editing the presets containing all the players, like "1st Violins full - All players". Is this type of preset the same as those including only an individual player, like "1st Violins full - Player 1", when I mute all the other players in the All players preset?
=> Yes.
>> If loading the All players presets with all the cells/patches deactivated, I guess that they will only take the memory needed to load that individual player that is playing.
=> Yes, but if you have the option "Enable on MIDI activity" turned on, the slots containing the other players will get enabled as soon as you start playing. If you deactivate all channels but one on the mix tab, only the patches in the slots routed to the activated mixer channel will get loaded to RAM.
Best regards,
Andi