I am using a high quality Logitech HD Pro C920 webcam. When using it without a background, the picture is sharp and clear and motion is pretty smooth. If I use a green screen with one of the installed virtual backgrounds (GoTo background), I get the 'melting man' effect where part of my body fades in and out or a 'halo' appears. I am using excellent lighting in front and to the side. Same setup as when I had a Zoom account, and there it worked perfectly. Any suggestions?