Updated to the latest Redshift 3.0.31 and now turning on a mesh light seems to break SSS. The material on the body of the probe on the left and its little satellite have some slight SSS. As soon as you turn on a mesh light the material gets really dark and flickery when rendering. Still waiting on a response from the Redshift team, but giving everyone a heads up or if anyone has any insight into this situation. I know they updated point based SSS recently.