Dannnng
Try playing into a Browser also
Check your Task Manager
I also tested quick on windows 7 and got 20/30 FPS
edit
After removing RUNTIME BROKER , nothing changed much so i'll keep testing cause , every time i close my laptop and re-open , i get 60 fps until something happens.
You can try with my link
I will also try to remove things from my game to help.
The 4fps constant is very bad , that stresses me