MV-1000 WireGuard speed

The MV-1000 is capable of 280Mbps using WireGuard. Using Mullvad I max out at about 170Mbps on a 500Mb fibre connection.

Is this fairly typical?
Any tweaks I can do to bump the speed up?

280Mbps is a lab testing result. The actual speed is very depends on your service provider’s server location, your ISP service and other impacted factors.