As a lot of you may know, the Legacy lighting mode is being deprecated. Hence developers are forced to switch over to the alternate modes, such as Compatability or Voxel.
However, for some reason, these modes are noticeable laggier than Legacy. Many of our players reported a decrease in performance after switching the lighting modes. Even I noticed this myself. I used to get a solid 60 FPS on my game, now I dip to 50’s.
I honestly hope that the reason for this is just that it’s still a WIP and it will be resolved sometime in the future.