What's your lag with Droidcam?

My experience was a delay of half a second, making it unusable for live conferencing.

I use DroidCamX too, I don't have any noticeable delay but I have a fairly solid wireless setup (Unifi AP in the same room) and most of the time I just use the USB cable anyway so I can also keep the phone charging

I've used it wired via USB to Windows, and it was usable for live conferencing.