Hi Frecks1234,
I apologize you are getting slower speeds. Please first run a speed test using a wired connection in a desktop or laptop computer using https://www.speedtest.net This will just test the connection from the internet to your modem and limit causes outside of Cox's control if you still see an issue, I will be glad to test your modem. Please reach out to us privately at cox.help@cox.com please include your full street address to help me locate your modem and a link to your forum post.
Greg