Buffering is almost always related to a slow internet connection. If Health at Hand detects a weak connection mid call, it will reduce the quality to try and stop the call from dropping altogether.
Try the following:
- Check your internet connection. Do you have a strong, stable WIFI signal?
- Make sure you are not downloading files
- Make sure you are not streaming music or videos within other tabs or browsers
- Make sure you are not sharing files and close any apps that may be eating up your bandwidth