Hmm, possibly the "HdrFP32="1"" setting for Ultra? I notice the other settings don't have it, nor does your defaultrenderconfig.xml, even for the HQ. ~Hmm maybe not, found an old post where TheWorse mentioned it may not actually do anything because of the shaders. It's just an old settings he left in. Oh well if I cant find it it's not game breaking, I do like the effect, would just like to lessen it some.