I am rendering a scene with eevee. Fair heads up I AM in 3.0 alpha but I don’t see anyone else having this issue so I am hoping maybe this is something obvious that I just screwed up a little. I am sorry I cant show a whole lot due to the position I am in but hopefully this cropped screen shot will be enough. This problem seems to appear a lot on textile patterns with repeating patterns and only from a distance and at certain angles where the pattern seems to repeat strictly in a way that reflects light strictly horizontally or vertically. This never appears at skew angles to direction of anisotropy created with the normal maps. I need to loose this artifact in the final render and I am hoping some of you may be able to identify what is causing it.
What I have tried is, setting filtering to x16, setting the max image size to 4k, setting samples higher (this render is 2048 samples), increasing and decreasing bump map, re-baking the light probe. Enabling and disabling all post processing. The problem exists even on bare bones settings with only minimal clay materials with normal mapping. If it has texture then it has this dark streak.
Ignore the red areas. That has to do with identifiable features I cant show. But, that black line straight down the middle is the line I am talking about. It is very strange.
In the end I suspect it has something to do with the indirect lighting but I have tinkered with every input or slider and nothing seems to quite do the job to fix it.