Earlier quoted context omitted.
Your game would go from playable on a smartphone to requiring an rtx 4090 and 64gb of RAM (ok, slight exaggeration). But it would certainly look amazing.
Just for reference, here is a real-time 4D Gaussian web viewer: https://antimatter15.com/splaTV/ Does anyone on a smartphone want to try it?
Samsung S10+, 60FPS although I'm not sure what I'm supposed to look at.