Hello  @kendo1 

Thank you for reaching out to us. 

We have an instruction explaining the powerline rate ( speed on tpPLC Utility/ app) and the actual speed test result: 

Explanation about the Powerline Rate and Actual speed of the Powerline Adapters

The speed will get reduced while signal being transmitted through house powerline  and the real wired/ Wi-Fi speed is closely related to the powerline rate and also received speed coming from the router.  In the actual household environment, real speed test could be 20% to 35% of the powerline rate and also capped by ISP bandwidth or router speed.

From the photos you provided, speed test around 70Mbps could reasonable.

Hope this helps.