Dude, try SU options editor then go Irradiance map change HSph. Subdivs. default is 50 make it 100 or higher. the higher HSph. Subdivs. the longer the rendering time.

@massimo said: Hi Tommaso and welcome. Please don't post external links to your images. I'm not on Facebook for example so I can't see them. Just use the "upload attachment feature" you'll find at the bottom of the post panel. You can upload your work in the gallery section of the forum. You can choose the WIP subforum for your work in progress jobs. Thanks, I just added some pics in the Gallery section so that you can see them I hope. Thanks again for your support and lol fot this forum!! Tommaso