Judder hands leap motion

[iljaburzev]

Consistently getting an issue even on a simples scenes, when hands start to judderly jump up and down a bit. FPS remains over 80. Sometimes only the hands are affected, other times camera too.

I have recorded a video of the effect, I'm using 4.1.1 with 0.8 oculus. Holding the hands static here:

[iljaburzev]

It also seems that the problem has intensified since I moved to 4.1.1.

This seems quite serious, any ideas from the dev team?

[Joe_Ward]

I'm not sure what is causing the shakes hands. One possibility is the presence of other Leap devices nearby. The IR flashes can cause a bit of instability and pulsing in the tracking results of another device.

The camera jump can happen with the Oculus if you move your hand between the HMD and the tracker, since it blocks the head tracking for a moment.

[user-295940283]

Hey Joe (I'm working together with @iljaburzev )
There're no other leap devices, only oculus tracking camera. Camera doesn't jump, just sometimes starts the same pulsating movements that you can see hands have. (when moving hands out of fov, shakes persist)

[Joe_Ward]

It is hard to understand what is going wrong here. I don't believe that we are moving the cameras at all.

Do you see this problem in the standard demo scenes?

[iljaburzev]

Yes I did observe that on PinchMovementDemo, but mostly I feel like this pops in on a more polygon-heavy scenes.

Here's a a profile of the jump, dunno if that can help in any way.

[iljaburzev]

Also noticed on one of the peaks this GUI.Repaint process eating up 30% through RTS: