Editor is fine but launcher has low fps

does anyone know why this might happen?

Anyone got any advice?

Anyone?..

how can it be in general? Why you need fps in launcher. In fact work goes in editor but not in launcher.

Tell about your problem. Do you mean that you have sone freezes in launcher?

This only tells me that your fps is very low, with little detail why. What is you average fps. I do not know how to test a game. You have probably got programing that is very performance using. Even the graphics could be using way to many polygons. The other problem is that your computer may not be able to run this game at a high fps.