Well, it could be the bandwidth, or it could a number of other things, including the webcam you are using, the lighting in your space, wi-fi signal if you are using wi-fi, resource limitations of your computer, security software, etc. We had to help a lot of people during the lockdowns get a good setup. After the first month or so, bandwidth usually wasn't the issue. Ring lights can make a mediocre webcam look a lot better, and security software like Zscaler can really mess with video performance.