It is possible that your shared screen is appearing in a Teams channel meeting due to the bandwidth or internet connection. To help improve the clarity of your shared screen, consider the following:

1. Connect to a stable internet connection.
2. If possible, connect to a faster bandwidth internet connection.
3. Adjust your webcam video settings.
4. Share a different application – such as a web browser, instead of a full desktop. This may improve clarity and reduce bandwidth usage.
5. Adjust video or audio settings in Manage Participant Settings.