Yeah so I love this mod but does anyone have a fix for the temple district?

It is a very old mod and prone to such problems, you could use http://www.tesnexus.com/downloads/file.php?id=19628 instead, which can even be configured to use the same textures as illumination within, has many more features, and is almost 100% compatible with everything.

Actually it IS 100% compatible with everything, and it has zero FPS impact, unlike Illumination Within which has several scripts running so affects gameplay negatively (and conflicts with any mod which moves buildings and doesn't add lighting to any buildings added by other mods, unlike AWLS which does).

I use both mods because the one thing AWLS lacks that IW has (and what causes more of a performance impact) is actual light sources on the windows. So you don't necessarily have to choose one or the other, but in this case getting rid of IW will eliminate the issue.