The BGW350 that they give you tops out at 5Gbit on the WAN SFP interface and has one 5Gbit RJ45 LAN interface along with two gigabit interfaces.

I connected the 5Gbit to a TP-Link TLSX105 10Gbit switch which has five 10Gbit RJ45 switch ports.

Since my office is on another floor and has more stuff that needs to be hardwired, I have a TP Link TLSX1008 10Gbit switch that has eight 10Gbit switch ports.

I connected the two together and, presto, 5Gbit for everyone.

My Macs have OWC 10Gbit Thunderbolt NICs so they can each get the full 5Gbit.

I tried using a Mikrotik CRS switch/router thing, but dealing with SFP inconsistencies is annoying as hell and it was a very slow router. (You need the higher end CCR routers to get 10Gbit routing, but I just wanted to have all of my devices use the Pi-Hole for DNS, which I could do with DHCP.)

UDM Pro

USW-Pro-Aggregation

USW-Pro-48-PoE

US-XG-6PoE

Recently bypassed AT&T's residential gateway by getting a XGS-PON on a SFP+ stick, let me shave off 2ms and gain a couple hundred mbps each way, in addition to removing their crappy gateway.