I have the 1gig speed Internet. Speeds to my router are great. Speeds from my router are horrible. 2.4 gets maybe 50mbps if I’m lucky, I’m often unable to even watch Netflix (I pay for 1 gig speeds). I have to have 2.4 due to some smart home devices. Comcast has ignored, made promises, blamed me, etc for months. What should I do at this point?