@valerostudio said:

2 things it could be

1- light portals - I find if you set rect lights to portal mode, it just kills LC

2- Displaced materials? If you have a lot of displacement in your scene, try to disable it in your globals and see if thats the issue.

I got that problem too, but this is helpful to me, I'm newbie for this.

Thank you very much

Regards
Okane81