I think you could just Pause the game, but change the actors setting of Tick While Paused on or off.
I am currently working on a project where i design and create a game of my own. The concept of this game is a first person shooter. In this game, there are two completely different dimensions. There is a player on each of the platforms but the trick about this game is that, while you’re in one dimension, the other one is frozen. Once you switch dimensions, the dimension that you just switched from needs to be frozen. If anyone knows the blueprint or the code or how to get it please tell me. I will be very greatful to anyone who tells me.