So the jittering is actually working as intended. The detection component throttles itself to updating 10 times a second, so when the crosshair is jittery it means that the crosshair is being show at the true detected location instead being approximated as the center of the screen.

When you alt-tab your character actually gets a slightly different head yaw... somehow. And when you look around with alt using Water core you also get a head yaw. In both situations it's expected that the crosshair uses the "true" position instead of the approximate center of the screen.

That said currently it will start using the true position instead of the 2D screen position even if your head yaw is a tiny fraction of a degree (what happens when alt tabbing). That is fixable.

An easy example of where the center of the screen is not where the detector is looking:

image.jpg (241,507 bytes)   

image.jpg (241,507 bytes)   

This will be fixed by updating the position estimate every frame, which improves this significantly. The screen highlight will still only update at 10Hz.