Welcome to the community!
Devices connected by Wi-Fi may experience slower speeds than those connected by Ethernet cable. We did an article that you may find helpful please see links below.
We'd love to help and see what causes slow connection with your service, we tried to use your Community details to pull up the account unfortunately it does not show any matching records on file.
Feel free to PM us your account details (Username/Customer ID together with the complete address).
In case you need a reference:
Thank you for providing the details @Michael569.
The speed for ADSL2+ is greatly affected by the cable distance from your premises to the nearest exchange. The copper cable that is being used is 2.4 Km, with this distance, the speed that you are getting is within range.
Here's a community article which will provide you some tips on how to troubleshoot the slow speed issue.