Yeah, its a new windows laptop I am using for Gbit testing. CPU around 12% and Memory 45%.
I have also tested with a new iPhone 13 and iPad Pro, getting the same results.
The high-level speed test results may show similar for phone (via WiFi) and PC/laptop via cable connection but could be for very different reasons.
For example the BT SH2 only supports the 802.11ac WiFi spec rather than 802.11ax (WiFi 6) spec, so that alone will cap possible wireless speeds to well under 900 Mbps and more like 500 Mbps.
There is still very much a good chance that your PC even though it is relatively new could be in itself throttling network speeds as noted, due to issues that have been mentioned related to third party AV, anti-spam, firewall etc software. Even when deactivated - often the system will continue to behave poorly in speed tests until the software is completely and totally un-installed - due the the nature of how and how deeply embedded it is within windows and its networking stack.
Testing with a non-windows machine or booting the machine in question into linux via a USB stick, as suggested, are usually good means to prove or disprove this.
Just trying to be pragmatic. It's not always straightforward diagnosing where the issue(s) lie with gigabit broadband.
Edited by Pheasant (Fri 11-Feb-22 18:59:15)