Hi,
I have had my Telstra NBN FTTN for 3 weeks purchased with a speed boost pack to 100/40. I use the supplied Telstra Gateway Max 2.
The peak performance I am getting in non peak times is ~15Mb/s download, and ~4Mb/s in peak hours. The performance is the same on 2.4Ghz or 5.0Ghz wifi, and if connected via ethernet cables.
Example below ran a few minutes ago.
Any thoughts or suggestions?