I just wrote 5g and 2g next to them both. Also can I ask, what would be the benefits of using a different router instead of the hub 4? Like will it help with things like latency and packet loss?
A different router will not help correct any problems in the VM circuit, like latency or packet loss. These will still exist whether or not you use the Hub or your own router.
However using your own networking kit gives you better control over your network, e.g. DNS settings, parental control, QOS etc. It's not hard for a £150 quality router or Mesh system to outperform any "built to a price" ISP kit. In all the years I've been with NTL/VM I've never used any of the supplied Hub's as Routers, they go straight to Modem mode as I have my own networking kit.