JMacDada

Thank you for sharing the problem. 3 years later I now have the game and came across the exact issue. I found that after the patch it cleared the main issue but found that the lighting in Dragonsreach was making an on-off (or rather a dim-bright) type flicker when panning around my Avatar near the central fire-pit. So I simply deleted the Interior mod, and kept ELFX... It is a very cool effect seeing out of the windows, but ultimately, I don't stand next to a window looking out watching the Skyrim adventure. ELFX won that pseudo-random toss-up.