@arev The bathroom scene shouldn’t be particularly high in polycount – not like the sportcar model from week 2. It’s not a game-ready scene though as that’s not the goal. The scene isn’t that slow for me in Cycles and I’m on a 5 year old mac..
I know the light-showing-through-walls issue with Eevee though. As far as I can tell it’s an Eevee quirk due to limited physically accuracy compared to Cycles. Part of the reason I suggested Cycles. @nekronavt do you have any tips to avoiding this issue?