Good question @madman! If both Cams are setup and linked to the same location, that will factor out any time zone concerns. Please try removing and reinstalling the Ring app on your mobile device to ensure the scheduling feature is working as intended.
With this feature working fine for one Cam versus the other, it’ll be best to compare signal strength on your Floodlight Cams, as wifi interference could certainly delay or impact operation efficiency. If this concern persists, I recommend reaching out to our support team for an in-depth look.