

Again, your ISP does DSCP markings. They will only benefit you if you are facing congestion issues inside your local network. When that external FaceTime call packet is received by your router, if you receive it at all because your ISP doesn’t care about markings, and you are having Internet issues, it’s going to reach your end point crazy fast inside your LAN, but I bet the call will drop regardless because the UDP steam is either too jittered, or completely frozen anyway because of the upstream ISP issue.
It’s great to configure this to understand the principle, but I’ve been in the industry long enough to know when QoS is required over a 10MB MPLS pipe, and not required over a 1GB+ pipe. The pipes are so big today that flow control has little use case any longer and can cause more issues and hand holding configuration than necessary.
I guess what I’m trying to say is if you’re having issues with your home Internet, you will see it regardless of how much mitigation you try to configure inside your own LAN.
Why stop there? Pretty sure BL3 was free at some point recently.