Welcome to the Wyze User Community Forum @ddd1249! 
Your sensitivity is too high. And you are correct, lowering the sensitivity reduces its effectiveness.
I had the same experience but I was only activating the lights on Person Detection. The floodlights were constantly activating with no person in the FOV but was only uploading a motion video. The Server AI was not tagging it Person because it saw no person in the uploaded video.
I contacted Customer Support and they recommended starting with a sensitivity of 40 and making very slight adjustments, one point at a time, until the sweet spot was reached. I am now at 42.
This issue has been reported to the Wyze Team for improvement in the future. IMO, if the floodlight is activated for an onboard AI Person Event, there better be a Person tagged Event Upload so that I am able to submit it to Wyze for onboard AI retraining updates. There is no reason that the sensitivity should be below half itโs capability for the AI to work marginally.
I am going to continue to track progress in future WFLP updates with the hopes that the balance between effectiveness and sensitivity improves.
The Wyze Project Manager for the WFLP did indicate during an AMA event that the WFLP has enhanced onboard AI that should only trigger on moving AI objects, not stationary ones: