Screen flips upside down and stretching with ENB

[PeterTran]

I'm using A Tweaked ENB. It works great for the most part.

But there are sometimes where if I look in a certain direction, my screen suddenly flips upside down, and half of the screen is stretched.
A demonstration: http://imgur.com/a/2sNT6

In the first screenshot, it looks normal.
But in the second screenshot, I move the camera up slightly.

The problem goes away if I disable ENB. I also notice that this generally happens in very busy cells, whether that means lots of objects or light sources.

Any help would be appreciated.



EDIT: Upon further inspection, I notice that it has to do with light. For example, I was in a dark cave when it was fine, but when I equipped my torch, the bug appears.
After trying a few different ENB's, they all have the same problem. Pretty much anytime the camera gets very close to a light source, the bug occurs.

Edited October 5, 2016 by PeterTran