I have an Archer C8 and it does not. Suspect the same for yours. By using one on your device, you will also see limits that the device may have. I know you would like a pure measure of your ISP.

There are many speed tests online that you can use with Ookla (https://www.speedtest.net/) one of the go-to ones. Bypass the router and test with your PC connected directly to the Modem. Be sure to...

Maybe you could add a second router. One controls the MAC addresses and the other has the guest network.

I would reset it back to factory specs and reenter the settings. After it is working, back it up.

I would suspect it is the ISP router. If you have not already tried, I would first try switching ports that the C60 is plugged into on the ISP router to see if that makes a difference.

You need to connect technical support directly to see if they have a Beta for you.