C7800 Slow

[mattg7]

Nighthawk C7800 is slow wired or wireless. I'm on Mac OS 10.14.6. I have Grande Communications 600MB but have been clocking about 20mb on ookla speedtest while wired. I called Grande and was told that my C7800 might be the problem. I don't know much about this but feels like there may be something I can do to help get the internet faster besides swap out a modem/router I paid a decent amount of money for. All I've done is off/on the router/modem so any other suggestions would be greatly appreciated, thanks in advance!

[FURRYe38 · Accepted solution]

While the tech is there, have the tech test both the NG modem and one of there modems to compare results. Then go from there. 

[plemans]

do you have a screensnip of the cable connections page and the modem logs? That helps check the connection back to the isp. 

[mattg7]

Sorry, I'm quite new at this, is the attached what you're asking for, or something else?

Thanks again! @plemans 

[FURRYe38]

Have the ISP check the signal and line quality UP to the modem. 
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 

Try a factory reset and setup from scratch then to s a wired speed test....

[mattg7]

Thanks @FURRYe38 this is the coax cable I bought for running to the device, it is RG6...is this quality?

https://www.amazon.com/gp/product/B079G5F8JF/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I was told by a phone rep for Grande Communications that my device may be an issue...seemed like a set-up for handing over more money...after sinking a lot of money into the gateway device, I'm trying to use it for a while before switching to their device. ISP is coming today to take a look, so all advice is welcome, thank you!

[FURRYe38 · Accepted solution]

While the tech is there, have the tech test both the NG modem and one of there modems to compare results. Then go from there.