[tor-relays] Unstable router

Hello guys,

I'm hosting a tor relay at home. My router is a Fritz-Box (this one: http://avm.de/service/fritzbox/fritzbox-7362-sl/uebersicht/ ) and the internet connections is really unstable. Frequently the connection breaks. Not only to the internet, also the local network is down till the router reboots. Is there a better solution for routing a DSL connection? A better router or a way to replace the router with the computer running the tor node. Any hint is appreciated.

Thanks in advance!

Another question: If I'm acessing my side through a .onion address theres no need for ssl/https as the traffic is encrypted anyways, right?