Recently purchased these cameras and they have developed a problem after a couple of weeks use, at night there seems to be a delay with the infrared led's,, the motion sensor triggers the camera to record but the infrared takes to long to turn on so you just get a recording in the dark,, by the time the infrared has lit up you've missed what triggered the camera, I've tried resetting and taking out the batteries also removed camera from network and reinstalling but still the same.

Any help would be appreciated