I get about 650Mbps down which is my rated speed from Comcast after upgrading to this from an older one that maxed out around 250.During activation, make sure you connect directly to it from your pc and set your pc to dhcp if you are using a static IP.

(-/+ 5 minutes, the modem would loose its IP and my router behind it would report, "ISP DNS/DHCP configuration error".I travel and also remote office ( even prior to COVID-19)

Losing the IP, reboot....and repeat