Ring Doorbell Pro - constantly switching between day/night mode

Hi, I have had the Doorbell Pro for 3 years and no issues until this last week. As soon as my porch lights are off, I am noticing the Ring Pro switching between Day and Night mode from dusk to dawn. Watching the video, I am seeing the IR firing on and off every 15 seconds or so. Is anyone experiencing this issue? Nothing has changed from a physical setup perspective. Was there a recent firmware update that may have tweaked the sensitivity of the IR sensor? Thanks.