When update project goes from 90fps to 45fps.

Why?

Everytime that i update project version, i got a drop on the framerate to 50%.

and to fix it, i need to recreate from scratch the entire level.

Any clue?

Could be a config setting forcing Asynchronous Spacewarp on by default. Try opening your oculus-debug tool,enable visual hud(performance) disable Asynchronous Spacewarp and adaptive gpu performance while its running and see if the fps changes in the performance hud.