Internet dropping and slow internet speeds

Having some major issues with my Xfinity internet. Have a 200 Mbps plan but have bee getting speeds of 1-6 Mbps. Occasionally the connection drops entirely and I need to reboot the router to get it working again. 

Have attempted hard resets, firmware updates  and tested the cables. All seems to be fine from that end. It is just excruciatingly slow (how did we ever get away with a 56k connection!).

I worked with a support chat staff at XFinity about a week and a half ago. The tech said that there were some issues that they found on their network side that they pushed a fix out for. The support staff then quoted me a great deal that would have come with a new modem/router but failed in the process of setting it up. When I followed up it turns out I was misquoted the price and I am not signing up to pay $30 more dollars a month for XFinity to leech my bandwidth to expand their free wifi network (I have a wireless router that is working just fine).

Anyone else having issues with slow speeds? Any ideas on other things to try?