Poor connectivity but tests say everything is fine

[Colum2]

I haven't been able to complete a Teams call for a month due to poor internet connectivity but every time I run the tests SKY say everything is fine. What do I do?

[Mb1311]

Same issue in Penarth, South Wales. Sky test says everything is fine but Speed test by Ookla says different. Took about 10 minutes to do this test. 

[Rohit2]

Same issue internet is very slow and on external internet speed test shown speed is 13 to 15 mb where it is supposed to be beyond 100 mb