Cox connection with gigablast only up to 300 mbs?

Also that only shows you the connection to that one server. Cox doesn’t let you know that that connection then needs to be sent out to other servers to tech final server for whatever it is you are tying to do on the internet. The amount of jitter/ latency and routes it then takes is largely because of their poor infrastructure and old coax lines. Garbage the price of gold.

I have tried multiple speedtest mostly to fiber connection and still only get at max 300 mbs.

How many channels on your cable modem up/down do you have - give us the make/model # of your cable modem, and we can find that out.

If you don't have the right number of channels, your speed will be limited to an upper amount. I had to upgrade my modem that way, since the modem I was using (an older model I had for a while) didn't have the right number of channels. When I upgraded to one with the proper number - speed increased.

Note: I have been with Cox broadband since the "Cox@Home" days and the big grey foot warmer modems (2000-01 time frame) - and also on the internet since 1993 - and prior to that on BBS's even longer back to 1987...