Problem with the right controller being in the wrong place in VR

Hi. I've been having a problem for a while now (mainly after the recent frequent updates) with my right controller (I have a Quest Pro). It's taking a very long time to properly recognize and calibrate the controller's position (VR mode vs real). I have Boundary set to seated mode, because that's the only way I play, but the right controller (I usually use Link cable 99%) is on the floor in VR. Even though I have it in my hands at face level, I can move it, but it's still on the floor. Calibration takes a very long time, 4-5 minutes, and then the controller appears in the correct position (VR=real). Interestingly, I have absolutely no problem with the left controller; it's always where it should be in VR mode.  I didn't have this problem before, but it started happening around the middle of this year.

Any suggestions? What can I do? Thank you!