There is some unwanted reflection when I look to the leaves (which are actually rocks that are somewhere else):
Another issue is when I point a spotlight to the window:
I’m using Baked GI in Built-in render pipeline. I have trying to tweak some things but with no results
The first issue seems to be related to shader sorting. Either switch your shader to a different rendering mode, or try adjusting its Render Queue property.
Second issue looks like NaNs. They can manifest themselves when using high specular/smoothness values in your texture/shader. I’d suggest looking there first. You can also try ticking Stop NaN Propagation checkbox in the Post-process Layer component.
If NaN issue reproduces only after baking lightmaps, then it might be a directionality issue. Switch to Directionality scene debug view mode to verify it. To fix it, either bake using CPU lightmapper, or switch to non-directional mode.
Nice. Solved both issues 
thanks!
