I know I didn’t create this topic but @Justheaven @Angel.L @lanafrazer_episode thank you so much lol
I literally used to fade my overlays in/out like this:
@overlay OVERLAYNAME opacity 0.1 in 0.1
@overlay OVERLAYNAME opacity 0.2 in 0.1
@overlay OVERLAYNAME opacity 0.3 in 0.1
@overlay OVERLAYNAME opacity 0.4 in 0.1
@overlay OVERLAYNAME opacity 0.5 in 0.1
@overlay OVERLAYNAME opacity 0.6 in 0.1
@overlay OVERLAYNAME opacity 0.7 in 0.1
@overlay OVERLAYNAME opacity 0.8 in 0.1
@overlay OVERLAYNAME opacity 0.9 in 0.1
idk why I did it like that 
Again, thank you for your help 