Jennie Rimell

Can anyone tell me why when an engineer came to change my router and all tests done on the router was producing 140-150 Mbps the next day it fell to 25mbps now I am lucky if I get 80mbps I am supposed to have 200mbps The only thing I have done is change the ssid, it's at its worst in the morning https://testmy.net/quickstats/Jennie Rimell