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Up and Coming
July 28, 2019

Moving Grabbed Objects jitter (Unity)

  • July 28, 2019
  • 19 replies
  • 12256 views
Using Unity 2018.4.5 and Oculus 1.38

When I hold an object (simple scene with just a cube) in my hand, then the movement of this grabbed cube is very jittery and not smooth at all.

Using OVRPlayerController with LocalAvatar in TrackingSpace and AvatarGrabberLeft and Right inside this LocalAvatar.
I set the Fixed TimeStep in the Project Settings to 1/72 (0.01388889).

I uploaded a video of this behaviour: https://youtu.be/AoJ_d0d2Dq8

It's not as obvious in the video as it is in VR, but I think you do see the issue at the edges of the cube with the stuttery movement.
Interestingly, when I throw away the cube, the movement is smooth. Also the movement of my hands is smooth, it's only the object I'm grabbing that stutters.

Any idea how I can prevent this?
Thanks!


19 replies

Inspiring
August 5, 2019
Same here... Simple empty scene in Unity and hands jitter so badly on Oculus Quest, I have tried many Fixed TimeStep 1/72    1/60   1/36  etc...  hope there is a fix of this soon.
New Participant
August 6, 2019
I had a similar issue -- disabling VSync seemed to fix it for me
New Participant
August 22, 2019


Adding hands to LeftHandAnchor solved it for me. (Don't forget tracking space as Parent Transform)
New Participant
September 10, 2019


I found out that if you check "Parent Held Transform" on both AvatarGrabberLeft/Right, the object stops jittering while grabbed. Unfortunately this also produced a strange misalignment of the hands while moving them around.


Thank you!   This fixed it for me also!  I spent an hour trying different settings.
New Participant
October 24, 2019

I set the Fixed TimeStep in the Project Settings to 1/72 (0.01388889).



You just saved me from going bald. I spent hours in Unity trying to solve the jitter before seeing your post!
March 30, 2020
TimeStep in the Project Settings to 1/72 (0.01388889) fixed it for my Oculus Quest as well.
Thanks buddies.
Up and Coming
February 8, 2023

Do you know after so long if a solution has been found?