Floodlight Cam Lights coming on constantly

Hi. I've tried everything I can to stop the lights from coming on randomly every night. I've turned each of the 3 zones off over 3 different nights to see if one zone was the problem. I've also turned the sensitivity down almost all the way. I feel like if i turn it down any more then it won't pick up motion in the area I need it most. Is there any way to just have the lights turn on only if the camera detects motion? The camera detection zone is perfect for me, so I don't need the larger light detection zone. Thanks,Todd