Oculus Body tracking is laggy after app is waken up

[swang81]

Dear guys,

It seems a bug for bodytracking in Unreal engine 5.3.2. 

1. I download the demo from oculus sample github (unity + unreal) and test them.

https://github.com/oculus-samples/Unreal-Movement

https://github.com/oculus-samples/Unity-Movement

2. build the unreal and unity sample for bodytracking and install them in the oculus quest3.  Open Apps and they all works smoothly. 

3. Sleep and wake up the headset.

Unreal version : I found the tracking body is very laggy but the controller play very smooth. After about 30s, it will work well. In the picture, you could found the hand cannot attach to the controller. 

unity version: It recover in ~2s without waiting for a long time.  

I try to print the log for the tick event. Body tracking API （GetBodyState(FOculusXRBodyState& outOculusXRBodyState, float WorldToMeters)）return the same skeleton position value within a short period of time, which results in the body cartoon not playing smoothly.   

[kirkbarker]

Thanks for letting us know about this issue.  I've put it in the queue to duplicate.  Will get back to you if we are able to duplicate or if we need more info.

[swang81 · Accepted solution]

It is a plugin bug.  It has been solved with new UE plugin V64.  

[Ethoshquest]

Hi, 

The sample project on GitHub no longer supports Unreal Engine 5.3.2, as it’s designed for 5.4. Is there any alternative source or sample project available for 5.3? Alternatively, how can I get full body tracking working in 5.3? Any guidance would be appreciated. 

Thank you!