RRU Reset not solving RSRP Fluctuation

Hi All.

While doing RRU reset, RSRP fluctuation is gone and stable for 1 hour.

And after that again it is coming for some cells in 5G SA 700.

No alarms seen from OSS.

Can it be a RRU Hang issue?

Which we are not able to see from back end?

Can you check if Cell calibration is OK?