Lights and shadows makes it more realistic for me...
1.3.1 makes it more 'smooth'. Look at the shadow on the left door and wall. And there are more settings in shines of all models to create it more realistic.
But sure...it's your choice...I saw only that you started to use 1.3.1 before,quality of your pics enhanced.... and now I see you stopped. That's why I asked why...
It's only about priorities.