The new modular furniture that came with the new GP are very cool but they have a lot of light issues.
I changed the sofa shaders from phong to counter. The sofas will now be affected by the occluders shadows. Tall objects will produces darker occluders shadows. Although I think that it´s more realistic it can bother some people. To get rid of it just place one or more artificial light.
Sectionals Sofas Override Fix for the light issue at Mod The Sims 4


