Works well with Unreal Engine lighting system. When importing into unreal engine, uncheck the generate lightmap option. You can check combine meshes also. I recommend a lightmap resolution of 200 rather than 64, you can increase the lightmap resolution by opening the model viewer in unreal engine for this object, then, there are two places in there where you can increase the lightmap resolution from 64 to 200.
Credit to Imphenzia for his tutorial: https://www.youtube.com/watch?v=IBhfQClL03M&t=772s