Not managing to get realtime GI smooth, tips welcome!

Okey at this point I feel I’ve read everything there is to know about Lighting stuff in Unity 5 , still can’t get my simple scene to look reasonable.

I’ve got this simple scene with a single mesh “box room” with the size 11(L) x 6(w) 3(h)

My settings are as followed:
Sunlight:


Lighting:

Lighting object:

And my GI settings:

I’ve got “generate Lightmap UV’s” ON

If I’m missing something please let me know, would love to know how I can get GI without ugly smudges.

What ugly smudges are you talking about?