Be wary of bb speed checkers. They'll inevitably show different 'speeds'.
Speedtest.net will allow you to keep previous tests as comparisons. Whenever you use such testers always run about three tests from the same servers to get an average. Also run at different times of day if you can. Three I'd recommend;
The last one is generous with what speeds it monitors.
Take three readings from the same server at specific time of day to give you a general download speed.
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