With my Netcam Studio set up, I have 4 V2 cameras. The feeds work, the motion detection works, and the timelapse works.
Front 13-May-2019
(at around 1m36s you can see the northern lights)
Front 14-May-2019
(at around 1m30s the rain starts! not snow! for a change!)
I’m not saying it’s Blue Iris. Perhaps the fact that every 30 seconds I ask Netcam Studio to snap a time lapse photo keeps the connection alive. Maybe NCS polls the cameras in a different way.