I am currently running three campaigns. One is a homebrew, one is Tyranny of Dragons, and the third is Lost Mine of Phandelver. This morning when I was prepping for my ToD campaign, my maps began to lag quite a lot. I believe the cause is from the dynamic lighting, but the issues have not happened before today. I ran my homebrew campaign Tuesday and did not have any of these issues, but the prewritten ones are lagging a lot on the premade maps with dynamic lighting. I've not had the issues with them before as I've already been on each map in the prewritten games. I really do not want to quit using the dynamic lighting. Any advice on how to fix this or any answers would be very much appreciated. I have already done the three steps to attempt to fix this, but nothing has worked.