Halo 5 Forge lighting glitch

I’m trying to edit a large scale fiesta map (like the small symmetrical one from halo 4) but whenever I bake the lighting or try to change the setting( from paradise to another like stormy) it starts to generate and just freezes on the generating lighting screen and I can hear the audio que when I pause the game but I can’t do anything else but quit the game and restart. I’ve tried restarting my game like 8 accumulative times over a period of two days and the light map is the highest percentage at 74%. Please help