Close scene before starting a new one?

I create scenes one after the other. Most of my projects have more than 100 scenes so I am constantly in and out of scenes and, because of the way I think I have to do that, I believe I am wasting a lot of time.

So do I really need to close a scene, wait for the task manager to show DAZ Studio has gone, then open a new one? Even if I am switching between already existing scenes (for editing)? That's how I have been doing it for years because of that time lag closing DAZ Studio. I reason that DAZ Studio needs to clear RAM or VRAM or whatever. But it is such a time waster and I can't say that I am certain that I need to be wasting all that time.