[speedaccu]

An Online Internet Speed Test measures the movement of data between your device and a testing server. Depending on the tool, the test may report several important connection measurements.

[N7vivo482]

This really clears up how these tests work under the hood. It makes sense that results swing a lot depending on which server you get paired with, since two people on the same line can see very different numbers. Would you say testing at different times of day is worth doing before blaming the ISP?