FPS is lower than intended

[5tr1k3r]

Windows 10, Rust 1.61, 4.60 NVIDIA

When idling, FPS seems significantly lower than intended: I spotted ~33 fps for the default 50 max fps limit (based on next_frame_time = now + Duration::from_millis(20); line), and ~66 fps when there is no fps limit (I intentionally changed the outer condition to true so windowed_context.window().request_redraw(); gets executed every frame).

The weird part is that when I'm actively moving mouse around, FPS instantly goes to the limit: 50 default, and over 1k with no limit specified. I don't even have to mouse over the window itself, moving mouse anywhere at all affects FPS drastically. Similar effect is observed when I'm pressing a lot of keys quickly, and simiarly, I don't even need to have the elastomania window in focus.

[5tr1k3r]

It only works like I want it to if I completely remove the line *control_flow = ControlFlow::WaitUntil(next_frame_time);