No i do not have any light source between the hours this is happening. I do have soffit lights on a timer but these are off when this is happening and once the soffit lights come on the camera is fine with no problems.
Just new to this, but was struggling at first to see NVR on my network, the instruction manual gave IP address of 192.168.1.88 for NVR but changed that to 192.168.0.88 as all other equipment in the house are on the 192.168.0.???? IP address. Was using Chrome at first then switched to Internet...