I am not sure as to the reason why, but after opening my project today all my lighting was not working properly and was only lighting half of what it should be, it also flickers with lots of black squares in some of the shadows it does cast. I have a video of it as an example of the problem in one of my testing levels. Anyone know how to fix this?
Figured out the problem, somehow DXT5 Normal maps got checked in project settings and was causing all this funkiness. Turning it off fixed it.