Fixing fire

[Boba Phat]

Since the entire planet burns down every time there's a storm and it makes the game unplayable for me (3-5 fps while the fire rages), I'm forced to turn cheat mode on, change the weather to rain, then turn cheat mode off after every storm.  Until something is done about the whole world being made of flashpaper, can someone tell me how to nerf either lightning or fire?  There doesn't seem to be anything obvious to change the overall flammability of trees, grass, bushes, etc.