I don’t know about Avast Internet Security as I have Avast Free. While doing research I found this.

https://forum.avast.com/index.php?topic=101322.0

Avast actually recommends that you leave Windows Firewall ON.

Read the 1st comment from Dch48

Beware that Windows 10 is still in development stage and still changing and software and programs such as antivirus and etc will react different from the operating system. Make sure you have the latest version of Windows 10 and Avast IS