You do realise too many reboots/restarts in a short period will cause DLM to detect a fault and lower your speeds in an attempt to stabalise your connection.
I'd hardly call 1 reboot a week too many. Besides the router shows the correct connection speed and data rate - its just that real world performance is nowhere near that.
In that case can you post the full router stats and perform a speedted HERE after the first test scroll down and click on Further Diagnostics and post a sreenshot of that result. This must be done with a wired connection.