If you find that your home Internet connection has become slow or unstable, speedtest.it.umich.edu offers online tools to test your network speed for devices on various ISPs.
If you find the tested speed to be consistently lower than expected, contact your Internet Service Provider directly to further test your connection, and for additional steps to troubleshoot any connection issues. BroadBandNow also has some useful tips for improving your network performance.
Additional options for testing your Internet connection speed can be found on the ITS Network Speed