Why the low FPS on mobile?

Still tracking down this problem. It seems that the GameThread is the biggest culprit.
UMG is eating up a lot of power, and for some odd reason it has a few hundred children in the profiler.
I dont know if this means those are seperate widgets created or would it count widgets plus the things inside widgets.

Gonna keep digging until something makes sense.
I did find a spike which seems to be my spawning of the track