I tried set “Light map coordinate index” to 1 and 0 and even 2, also I was using this: https://dq8iqaixvew1d.cloudfront.net/en-US/Engine/Content/Types/StaticMeshes/AutoGeneratedLightmaps/index.html and many another tutorials to fix this problem. But still no results. When I set 2 - problem disappear but new problem appear - mesh become very dark. How to fix it? Thanks.