Thanks for the reply
I don’t actually need the lighting to change in any way, I just want the user to be able to switch to baked lighting for performance reasons. I have nearly got it working by setting the Gi quality to low, turning off lumen in the post process volume and setting the skylight to stationary but the lighting on any moveable objects looks too bright. I can turn off realtime capture in the skylight to fix this but it cant be turned on and off in blueprints and having it off makes lumen reflections look bad!
There has to be an exact method to get this working correctly but I cant seem to quite hit the nail on the head!