long mesh light map resolution vs multiple parts mesh and UV problem? or ...

[anonymous_user_81a6091a]

I have 12m continuous floor mesh receiving shadows reflections needed in high quality seen in camera in one chunk.
To heave non zigzag line off shadow I increased light map resolution for mesh to 4096 but its slowing fps for real-time.
then I spilite to smaller meshes but now visual of surface has cuts. How to avoid it (heard something about UV’s manipulation ? but I’m not so advanced in UV problematic)

anyway what is best solution for good quality texture and shadow and fast fps real-time?

pleas advice

[anonymous_user_81a6091a]

@Makigirl
I did fast light recalculation at low quality however now I have plenty of this !

@Makigirl

Hi!

It’s happening because Unreal calculates lighting per mesh separately and with the default lightmass settings you’ll get a blurred “average” result!
You can solve the issue by setting indirect level scale to 0.1 - 0.15 and smoothness to 0.6! It will raise your building time but you will get not just a smooth result but a LOT more realistic too!