Like a number of BT customers I am frustrated that Digital Voice will only work with the Smart Hub 2. I have been really happy with my Netgear Orbi setup for the last couple of years and don’t wish to go backwards to the SH2.
I’ve read the various posts on here explaining how to configure a SH2 in line with your preferred router. Not ideal as I understanding it introduces the issue of double NAT. Has anyone who has tried this setup had any noticeable performance issues?
If you put the Orbi in bridge mode you won't be double natting.
Double natting is not really a problem although avid gamers don't like it.
If you are not an online gamer, or have many port forwards set up, you won't know you are double natting.
I've an SH2 to handle DV and my Asus DSL-AC68U does the rest. I don't game so can't comment about that side of things but it all works quite well in truth. The SH2 gets a better download speed than the Asus and that's a positive for me.
I used my existing Netgear Orbi (which had been connected to a modem) with a SH2, using the Orbi in router mode. I had no apparent problems with using that set up. Unless you are a gamer I wouldn't worry about double natting.