Visio TV and Amazon FireStick issues

I have a Visio TV Model v506-an and I am having the following issues with an Amazon Firestick HD @nd Generation.  My WIFI is 5GHz with an Excellent Strength.  My issues are:

1. When turning on the TV with the Firestick Remote, I am frequently asked to update settings.  This is probably a Firestick issue.

2. When using Xfinity Streaming and watching CNN, ABC, TBS, etc. the audio stops.  This happens after approximately 20 minutes.

3. When using Xfinity Streaming the picture freezes up.

I also have an Insignia Fire TV and I have no issues.

Thanks for any and all help.