Basically sfm got only 8 shadowed lights limit, so if i want my lights to cast shadows from stuff (Like, look to the left of the pic. There's some shadows from lamp on the wall.), i can only have 8 of them. To emulate lights from red lamp and hanging lamp on the left i used all 8 of those lights, so i had to do a second render with other lights set up in the second room.Here's a little behind the scenes with only first room lights, only second room lights and both turned on. imgur.com/a/jjNgN