Hi @TeslaChris! Is there a difference in mounting height between the two? If both Floodlight Cameras have the same motion settings configured, the operation should certainly be the same. Keep in mind that the environment does change by mounting area, thus there may be an environmental factor at play here such as mounting height.
As stated in our People Only Mode help center article, occasionally when in People Only Mode, light reflection, as from an outside window, can activate motion detection. If you’re getting a lot of unwanted notifications look for reflective surfaces that may be shining light onto your device. This instance may be due to reflection of movement, or the lights being triggered and then reflecting back. Fine tuning this will be best done through trial and error. Perhaps try without people only enabled on this camera. I hope this helps!