Play in editor has low graphic quality

Im using 4.10.2. My problem is whenever i click Play to test out my level the graphics drop drasticaly compared to the graphics in Edit mode. Heeeeelllppppp.

Is the resolution scale in the scalability settings turned down?

Ok, ive turned up the scalability settings and the graphics improved (thank you a lot for that btw).
But now i have another issue, theres issues with the lighting and reflections. Do i have to rebuild the lighting or anything like that?