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After Image problem with Temporal AA and masked materials

Ue4 create a few strange after Images when you move, but only on masked surfaces. This problem is fixed when you disable TemporalAA. I've also seen this problem at Conan Exiles and Ark (two new Ue4 games on steam). disable SSR and motion blur make no difference. and the game works whit 60 fps

The material in the background is a simple mask material without extra settings, It only has a noise texture for "Opacity Mask" alt text

And the same effect I get at grass whit ditherTemporalAA alt text

Product Version: UE 4.13
Tags:
aiblur1.png (1.3 MB)
aiblur3.png (2.0 MB)
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asked Feb 04 '17 at 05:34 PM in Rendering

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stev1516
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avatar image YOUNG HOON LIM Jan 03 '19 at 08:24 AM

I had same problem as this, in my case I did change on my project render setting use 'MSAA' filter. Then I can't see anymore this like after image

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