Have 1Gig.
Sam Knows speeds show connection to Hub 4 is solid and decent speed.
However the wifi speed goes as high as and as low as - without changing anything.
Checked load, usage, interference, kept same channel (44) for teh 5ghz band (separated from the 2.4ghz).
A reboot dramatically increases speed. This then slowly drops off until useless, reboot - amazing again. Rinse, repeat.
Speedtest before reboot...

After (no change of anything, just a reboot. No fewer connections or extra signal traffic from other houses etc, same channel - no repositioning of equipment)...

I know wifi speed isn't going to hit 1gig - that's not my issue here. I can, as above, hit as fast as 750mbps - but why is it then dropping off to useless? NB it NOT do this using a Superhub 3.
BQM latest...

Anything else I can check, happy to do and share info.