new Comcast customer HORRIBLE coverage

[n0brainer]

We're a new comcast customer and we went with the xFi gigabit connection with the advantage addon so we could get the mesh pods.  On installation day I was told Comcast needs to run an assessment to get them to me.  Since then, i've had horrendously slow wifi speeds anywhere but my main room.  Wired in I can get reasonably close to the max speed, but in my office which is probably 50-60 feet I can only get wireless N speeds at about 30mbps on my AC built in Wireless card.  I went out and bought a new AX card for my PC, still only gets wireless N.  I confirmed with my mac laptop again only gets N speeds.  So I hooked up my own Asus Tri Band AC router in repeater mode and can get a solid sustained 200mbits speed (20% of my total . Then I tried a TPLink 2000mbps power line networking adapter and well, that was a waste as well.  

So currnetly I'm using my own ASUS router as a range extender to make a DIY mesh for my office.  But other areas in my house are poor N connections as well (my deck outside, maby 25 feet from the xfi router bounces between 2.4ghz N and a really slow AC connection), my wife's office upstairs is the same way.  

I can rig another router to handle the upstairs but i haven't heard anyhting about any assessments or even how to check the status of it, but with all my DIY stuff to make my internet functional I'm concerned it's going to create an issue with the assessment.

Also, when the installer was here they couldn't determine where the amp was connecting to in the basement, so they hardwired into an outlet on the main flor (which is fine), but I don't beleive i can move the xfi router anywhere but it's current location. 

[ComcastJosh]

Hello @n0brainer  first off we are glad that you decided to come over to Xfinity and also that you went with the Gigabit Internet tier.  I love my Gigabit internet with Xfinity!  The Wifi assement takes 14 days and we will send you an email once the 14 days are up.   I would suggest not using other routers and networking equipment and the most important thing is do not go into bridge mode the entire time.  Bridge mode is when you turn off the Wi-fI on the Comcast Gateway modem and if you turn it off then we can't measure the RSSI signal loss between devices and the Xfinity Gateway modem. 

[n0brainer]

So I need to work with insufficient signal where I need to work from? Ugh. Can I appeal the decision since it’s been nearly 2 weeks now that I’ve had my work around a in place?

[ComcastJosh]

@n0brainer  The only way we can accurately tell what is going on is with you using just the Xfinity gateway for your wireless and that is how the assessment is calculated.  I just checked your account and the assessment is still in progress.  Lets wait until it has been fully completed and we can go from there with what the results are.  Thanks again!

[n0brainer]

The report just came back that “everything is great”. *sigh*

[ComcastJosh]

Hi @n0brainer , I am sorry about what all you have been going through and yes it came back great becuase you have been using your own router and Wifi extender/mesh system etc.  If you are using your own equipment Comcast can't test the RSSI level from the device you're using on the internet to the actual Gateway modem it wll give false data back.  To be able to fully test it you would need to be using just our Gateway modem.  The reason we have the xFi pods are for customers who do not have their own mesh system and or extender/router etc.  You could always click the link below and sign up for the xFi pods. 

https://homewifiassessment.xfinity.com/