One thing I think people don't realize is just how resource-intensive video conferencing can be, especially in HD. If you're experiencing choppy video or audio, or others are saying your own quality is choppy, it may be because you don't have the bandwidth to spare.
Use a site to check your current internet speed before you start a video conference. You need about 1 to 1.5 mbps to have a decent experience, and that's with only one person in the conference. If your whole team is joining in, add another 1mbps per person, which can quickly put a strain on your internet.
Next, check your network usage. On a Windows PC you can do this through the task manager. See what's taking up the most bandwidth and ideally pause or stop the process before your conference. After that, check all devices connected to your network. Make sure your phone is off wifi, double check to see if anyone else is streaming something, and try to isolate internet usage as much as possible for the best conference quality.