The UI indicator on the cubes is great! Nice job. The lighting change makes it much easier to drop everything in the right position.
I'd like to clarify that there were no performance issues before, although I'm sure some people can run the game more smoothly with post processing turned off. It's just the spheres moving choppily when dragging them. I think it's something to do with the way the physics system interacts with how you are setting the position of the sphere to the mouse position. Hard to say! You should be able to find some tutorials on how to smoothly drag physics object using the mouse.
Gotcha, nice clarification. I haven't been able to reproduce the drag lag yet. I think GPT4 probably helped me write that method, lol.
I'm just playing it safe with the WebGL version by turning off Post Processing, and it didn't hurt the aesthetic too much. For some reason I did really like the film grain effect though, so I hope enough people get to see that.