Unity 5 light baking made my terrain invisible

So I’ve did my first correct working light bake in Unity 5 and I actually have 2 problems.
I thought when light was baked and not realtime runtime should go smoother and easier, but actually it’s about the same or even a bit laggier. Also my editor runs SUPER slow now that that lightbake is complete…

But that isn’t even the main problem. The main problem is that my terrain is completely invisble after my light bake. Does anybody have an idea what could have caused this??

Would be so thankful if anybody could help me out!

Ok the reason why it still was slow was probably cause I had Ambient GI on realtime instead of baked. Rebaking now to see for sure, still no clue why my terrain goes invisible :s