Experiencing terrible speeds for my gig speed plan

Hey,

I am seeing below 10Mbps speeds on my 1100Mbps plan.

On my phone it does not even reach 1Mbps, and this according to xfinity's own speed test website.

I am in a community plan where everyone gets the same plan.

I am using wifi on my Mac, 2 years old, there is no issue with the modem.