Can someone tell me why proper lighting works completely arbitrarily? Given the same song and map, randomly turning on an OST background, disabling gradients in technicolor etc. would make a difference but I haven't figured out what the fuck is doing it

I use this song and map to test it and have not been able to reproduce getting the grid to flash colors on hit on this despite having done so in the below video
https://www.youtube.com/watch?v=yf98-ZqnNoE
I've already re-recorded a ton for quality reasons and don't want to record more until this is fixed