It's entirely possible that I don't have a problem at all. I was using a speed test that was giving me very slow results. Then I found the other speed test that gives me results at the computer around 3/4 of the promised speed, and that's after sharing with several other devices whose usage I cannot determine. It would have been nice if the router had a built-in speed test. I know that some routers do. That, presumably, would tell me the speed before it's shared with all the connected devices.

  @daniel1948 

 

Well, my ISP (Spectrum) will only assist IF the Spectrum Speed test shows low speed. Why? Because it is RUN on thier side of the Internet basically. That is your test stays on their part of the Internet, otherwise you get all the delays of a myriad of servers back and forth to the test server. I think they wouldn't subtract  much though to the total speed arrived at though, but I've seen instances, expeically on phones where it does make a difference which test app or site is used.

 

Since the ONT does create a Network cable:

 

 

it can be connected directly to a PC Ethernet port and used. I've not tried it as I don't have it, but if at all uneasy, call your ISP and ask, or ask others that have the service if they have.

 

The only 'off-ISP' one I'd use is SPEEDTEST DOT NET (make it one URL removing DOT and replace it with a dot '.', I can't add it here as a link, not allowed in this forum s/w) so try a test with it.