Did you happen to have the video set to HD?
http://www.kinoni.com/support_android.html mentions USB connection along with other tips.
I don't have a webcam for my PC but my phone has a decent camera so I figured I could use that instead. I looked around a bit and found some apps like IP Webcam where it used the IP of the phone and essentially streamed the video. Unfortunately, this ended up being incredibly laggy and almost unusable as a webcam (for Skype). I tried some other apps like WO Webcam and DroidCam which used a USB connection instead of WiFi. The WiFi option within the apps worked fine, but both of the apps didn't recognize my phone when I tried to use the USB option. I can see my phone in Computer and my phone says that it's connected as a camera but the apps seem to not even see it. I'd like to know if there is an app that works, what I'm doing wrong, or what's wrong with my phone.
Android Version 4.4.4