That is mostly a security system for wlans, which is turned off when you purchase a router. And if you are able to set it up, it wont be hard to change it again.
That an isp registers your mac adress to your ip is not common here.
Its easier than you think. Its taking less time than to renew my ip adress.
I never really had a problem with the clutch (g25, h shifter etc), but if you really stress the clutch, like you do in real life traffic, it gets hot way too fast.