To experience the best quality video calls, both parties on the call should have
at least 2.5 Megabits of upload and download connection, with a strong signal.
Here are some recommendations to ensure the best call quality:
Ensure that your Wi-Fi router or internet connection is close to the ONSCREEN device
Be aware if there are things consuming your internet during your calls, such as someone watching Netflix in another room, or doing a big download or backup
Be aware that other appliances like microwaves or other Wi-Fi devices can interfere with audio and video signals so try to place the ONSCREEN device away from these devices
You can also use an Ethernet cable as a highly reliable connection
You can use a service like https://speedtest.net to test your connection.