Hi , speedtest.net gave me 3.76 down & 5.8 up ??
As a matter of interest, what time of the day are you running the tests? I've noticed that daytime is slightly slower where I live but in the evenings its way faster so it might be a suggestion to run a series of tests over various times of the day/night. That way you'll have a decent set of results to back your claim.Also when running the tests, make sure you don't have any background apps or updates running as that will skew the results.
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