I regularly use two laptops and occasionally a desktop when others are not being used.
I also use two android phones in the house and on exceptions.
I signed up for the M350 package. I did speed checks (using various sites) on the phones and also on the computers (ensuring one at a time was turned on) and tested wifi and wired. of course I have tried all the usuals like restarting hub/ unplugging everything/ ensuring leads are tight and replacing cables etc to see if anything made a difference. I am now resorting to this.
When using Speedtest.net for all tests I got the following results:
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