When move Hololens FPS will be dropped.

[Xiink]

Describe the bug
This month I encountered problem.
I have creat a connect to Hololens2 and My PC.
When I move my Hololens the FPS will drops suddenly.
If not moving the fps while always focus on 30fps.

But this problem will fix when I use usb connect to PC.
I have turn of the MRC try to fix this problem,but it still occurred and that pc only to get hololens image.

To Reproduce
Follow the tutorial on MixedReality-WebRTC documentation to connect PC and Hololens2.

Expected behavior
when moving hololens the fps should foucs on 30 fps.

SDP messages
N/A

Screenshots
N/A

Environment
MR-WebRTC version 2.0.2
Platform: Windows Desktop
Architecture: x64 (Unity Editor)
Unity version (if applicable): 2020.3.2f1
Target device: Hololens 2