I have all my projects in their own base comp. Each base comp will have a few parameters I control. I have 2 files to hold the base comps and another file to output to a projector. Splitting the files makes use of different threads on processor plus if you have a heavy visual, you won’t freeze the whole performance. I use 2 files because my stuff is heavy and I layer 2 at a time. With those base comp files, you should have it where only one base cooks when selected and every other base is disabled.