Lightmass GPU baking color artifacts

Development Rendering
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Hi! I’m new to lighting in UE4 and I need a hand.

Project is based on VR Template

I’m trying to bake Lightmap using GPU Lightmass, that’s the result

1
11023×1080 76.5 KB

I don’t know why I have this color artifacts, they are especially visible on lighter colors.

2
21878×1274 234 KB

Scene is dark but I want it to be dark because it supposed to be this kind of uncanny mood with darkness and lights.

There’s GPU Lightmap setup

3
3414×844 41.2 KB

There’s Static mesh setup

4
41920×1175 270 KB

There’s something weird with Lightmap density view before baking is green but after baking is red.

6
61478×1400 363 KB

5
51478×1400 362 KB

Please help :frowning:

I tried lots of things and I don’t know how to approach this problem…

I can’t use CPU lightmass because of my old i5 4460 CPU with it baking light lasts forever…