Positional tracking in Oculus Browser WebVR worse than native

Hi there,

Thanks for all the great work on the Oculus Browser! I believe I'm seeing significantly worse positional tracking in the WebVR browser compared to native apps.

To reproduce:

• Visit http://moonrider.xyz using the Oculus Browser on Quest
• Click to enter VR (glasses icon in bottom right corner)
• Bend knees and move whole torso from left to right (i.e. left/right DoF, not yaw)
• Notice the edges of things like the 'Start' button and the grey star you are standing on (look down) move in a choppy way

To compare:

• Open Beat Saber demo and start tutorial
• Move to the corner of the black square you are standing on (with the white edge) and look down
• Repeat same left/right movement
• Notice the white edges of the square do not move in a choppy way

So it appears the WebVR browser has a lower frequency of positional tracking than the native apps. Is this something that can be fixed?