Tecknowhelp said:
It's quite possible your seeing saturation of the test server. Speedtest wasn't designed for fiber tests. Try Google's test or DSLR tests.
Thanks I'll try those once I get home. Unfortunately, I get the same result using the so called "Cox speed test" as well (the one after you logged in).
Just a quick update, spoke to Cox after I got home last night, it seems that the slow down has reach a steady state of about 400-500 up/down. The tech told me things looks good on their end (signal wise, not speed they can see all the slow speed test), so they are sending out a tech for me. I tried two different router the one provided by Cox and the one I had (which is also a Gigabit enabled router), both gave me about the same low speed. Also just as a feedback I think speedtest works just fine for this purpose, if you see all the speed test done on youtube, they are all done with speedtest for either Cox gigablast or Google fiber, and in all cases speedtest was able able to show the expected result of around 950+. Lastly, Cox's own speed test is showing the same slow results as well.
Update 2: So the problems is solved, thanks Tecknowhelp for your advice along the way. So I will start with the final solution first, but I will get into what I then discovered with the R6300 router provided by Cox. The solution was to reset the router (hardware reset with pushing the reset button for 30 sec). But it puzzled me that a brand new router require such a reset just one day after the install, also the biggest signature is that no matter what I do, the speedtest was always capped by the router between 400-500 up/down. If you think about it, this would be about half of what Cox claimed the gigablast would do which is about 800-900 up/down. This is what I then discovered and confirmed by doing some Google search, by doing the following WILL result in your R6300 slow down:
- Setting up a guest network
- Enable the traffic meter
I tested this with the R6300 and I'm able to reproduce the issue every single time, I have verified that I'm running the latest firmware. Hence, a hard reset on the router would resolve the problem because it sets the router back to factor setting. So the Tech that came out did resolve the issue, but he didn't really bother to get to the bottom of the problem, he was more into blaming the customer for using older computer, by repeatedly telling me that my laptop was too old for the speedtest, until I told him I was able to do 800/800 up/down initially. Anyways, I think Cox should add this into their troubleshoot procedure, and maybe talk to Netgear to get a fix out.
I hope this will at least help some people using the same router.