Rogers and Bell have web sites for testing your internet speed. The advantage of using one should be that it is a pretty pure test of the ISP's infrastructure. TL;DR: run the test from a fast computer. When I used Bell's speed test on my own router (remember that it runs Fedora 38 and thus has FireFox and Chromium) the results were disappointing. Half or two-thirds of my promised speed. The problem turns out to be the web page itself. It burns a lot of processor power (javascript, surely). When I run it from behind my router, on a fast computer, the speed is as promised. When the client was a notebook with an i3-1005g1 processor, the result was also disappointing. I used a USB-c to 2.5G ethernet dongle. When the client was a notebook with a Ryzen 7 6800H, the result was good. I used the same dongle.