what are you testing ON ?
what devices do you have on the network
What are the other devices doing at the time of speedtest
did you try
speedof.me
I have found that to be most reliable when testing various routers for people when i used to do support at home years ago
speedtest.net was the other goto - but it kept changing and did not work on all devices
some times switching off the router may help - and get a different IP address
leave off for 30mins or so and it should give you a new public IP
whatsmyIP
DONT post here
by you will see if it changes
what devices do you have on the network
What are the other devices doing at the time of speedtest
did you try
speedof.me
I have found that to be most reliable when testing various routers for people when i used to do support at home years ago
speedtest.net was the other goto - but it kept changing and did not work on all devices
some times switching off the router may help - and get a different IP address
leave off for 30mins or so and it should give you a new public IP
whatsmyIP
DONT post here
by you will see if it changes