frames drops while using OPenXR vive Trackers UE5.3

when I use Vive tracker with openXRViveTrackerPlugin enabled, the frames drop to 9FPS, and the log says
“LogHMD: Warning: GetControllerOrientationAndPositionForTime called with motion source ExternalCamera which is unknown. Cannot get pose.”
Repeatedly, the tracker’s role was set to “camera” in Steam VR tracker settings
this problem didn’t exist with the live link in UE 4.26
any help with this issue?