Hello there! I’m having this same issue in unreal version 4.12.5. I didn’t find a solution yet and I tried using the smooth tool over the retopologized areas 
. Any ideas on ho wto solve this?
Hello there! I’m having this same issue in unreal version 4.12.5. I didn’t find a solution yet and I tried using the smooth tool over the retopologized areas . Any ideas on ho wto solve this?