Hello, thank you for taking the time to reach out to us on this platform and for giving me the opportunity to assist you! I can definitely help with some troubleshooting steps to get you the right speeds. Are all of your devices showing that slower speed or just one in particular?
Same exact issue. Tech just left and he was getting the speed through his tester and on his cell phone. But nothing I connect shows anything higher than 350
If you're testing over wifi you won't see 600mbps.
Can you please send me a private message with your first and last name so I may further assist you? To send a private message, please click my name "ComcastThomasF" then select "Send a Message" on the right side.