Streaming and VPN, how do you ppl do it?

Routers VPN, DNS, Leaks
1

Just got my Flint 2 and playing around.
Simple setup of router + vpn and Everything just works!
Until streaming...
This is NOT the routers fault in any way but the providers like HBO Netflix and so on...

Started Reading up on things like split tunnel and PBR and trying different things, still confused though.
I have a couple of streaming devices in the house and the cry from fam when HBO didnt work was Amazing - and trying to find what domain names HBO uses for it's service so I can filter that traffic to not go trough VPN was a bigger challenge than I though.

So, how do you ppl "do it"?
There must be things I'm missing.

2

I am just excluding the VPN domains or the devices like Smart TVs.
See VPN Dashboard - GL.iNet Router Docs 4

4

Well there’s the problem. I’d like all devices always go trough VPN and filter out the stuff that should not go trough VPN. And there is the problem.

So I was hoping this was “normal” and that there was a fairly simple solution to is, like a subscription URL for most streaming services or some “hidden secret” obvious to everyone who have been doing PBR for a while but not for a beginner like me?