My first step would be to upgrade the firmware to the latest release (354-19031112). On the "Download Center" page, scroll down to 3/22/2019.
The firmware update seems to have fixed it. I downloaded from ”03/11/2019 Firmware for Reolink IP Cameras (IPC_51316M/IPC_51516M)” /
Firmware Version 354_19031112
Applicable hardware version IPC_51316M
Very good camera.