One of the gui item offer the possibility to show the traffic graphical. Thats nice, a its reduce the possible traffic speed p.e. to 50%. So switch it on if you use it, a dont forget to disable if you left your webinterface. The exactly value will be depend on hardware and can be some other configuration.
It can be it will be a good product feature, to disable this if no user are logged in the webinterface.
I will add this to the gl user created bug list…
By the way, it can be it will help to speed up the router a little bit and increase the security, to disable not used services. P.e, if you dont use ssh, disable the always running dropebear service. Disable the one or boot ALLWAYS running VPN server on the router if you use only one or zwero of than. The same can be doing for booth allways running VPN clients.