You're almost there, use this one.
Steam\steamapps\common\SourceFilmmaker\game\platform\scripts\sfm\animset

Change the shadowFilterSize of the light.

3 lights. Light up the room, light up the building outside, and give some lights from outside into the room.

Depending on how you want the 'morning' to be.
This is good enough.
http://i.imgur.com/NKfz1R2.jpg

I suggest you should rollback your SFM version to like 0.9.6.3.
I believe it is the AO that is not rendered properly on your PC.

Can you try to narrow down what are you trying to ask ? Also, are you trying to achieve this effect ? https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=133116968

Originally posted by Matan.dll:

I've found a fix for that. You should copy all the files in game/sdktools/python/2.7/win32/tcl and paste them in game/sdktools/python/2.7/win32/lib
and everything works again :) . That's because they upgraded the Python version to 2.7.5

That's one way, but I'm not going to do it till they fix them.

Mine doesn't work either as the script uses Tkinter, which the update seems to broke it.
You have to wait for the author who made the scripts to fix them.

Latest SFM update broke certain scripts.

I forgot to mention that you should try unlocking after you did the 'playhead' preset.
See if it works.