When you have ENB in an Enabled state you're unable to activate the effects of Auriel's Bow ( https://www.youtube.com/watch?v=-YsFL9fTSvU ) but it works fine when you Disable ENB through SHIFT+F12 or manually in menu. I've gone through disabling different effects to see if it has any effect whatsoever but nothing so far. You can Enable the ENB and continue on your way after you've activated the effect with ENB disabled.

It's not just visual either, but the actual effect won't activate (disable sun damage for example). I've been unable to find any information regarding this so making this post.

I use v0.342

It must be original game post processing, same thing as khajiit or vampire vision removed cause of custom shaders. About such things you should ask preset makershough to make code, it's tricky, but possible. Though i doubt they will do, very few presets handle such cases. It's out of my control, cause contained in external shader which modified to not look ugly.

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i5-4690k, 16Gb RAM, GTX 1060 6Gb, X-Fi Titanium, Win7 x128
I am INFP, not the brutal, godamnit.

Thank you! and for the ridiculously fast response btw.