Hi, @nlkirchn.
Welcome to the Roku Community!
Thanks for reaching us about the motion issue on your camera. We're here to help.
In this case, you may try adjusting the detection sensitivity on your camera. Go to Home > Camera > Settings > Event detection > Detection sensitivity. You may then adjust the sensitivity of your camera.
If the issue persists, please let us know.
Thanks,
The Roku Community Team
Reynan L.
Roku Community Moderator