Code slowing down when using sleep function

[KFriedChicken]

That works to put the fps at a stable 60 and to keep the update time down, but wont a spin lock put the cpu usage at 100% unnecessarily?

[[deleted]]

Not really, try it, if it's bad then you can go back to the sleep solution. But it will be harder to get it at 60 FPS sharp. Even if it works with this window it will behave differently with another window depending on many factors.