SSAO messes with normal maps
I noticed this issue already in 4.8.0 hoping it would be fixed in 4.8.1 but it isn't.
The SSAO is for some weird reason doing something on normal maps, it darkens it somehow and it blends in and out based on distance:
Here it is with SSAO off:
This is on a landscape but it also happens on regular meshes.
Also, this SSAO glitch is still not fixed, maybe it is related: https://answers.unrealengine.com/questions/244646/ssao-wave-wobbling-glitch.html
Is you project using baked lighting, or is it fully dynamic?
If it is dynamic you can use a different AO method (the one I like to use with outdoor scenes) called Distance Field Ambient Occlusion. You will need to do some small preliminary set up, but it is a great new feature and provide accurate and performant results.
Distance Field Ambient Occlusion
answered Jul 13 '15 at 03:36 PM
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