Verbindungsabrrüche

I bought the router about a year ago. The router has a total of a very good range and has worked well for several months. Unfortunately, it was in the past about 5-6 weeks to regular disconnections (2-3 times daily).
On the Internet e can not lie, because I kind of crashes - not had - if I have the network cable connected to your PC directly from the router.
I'm now a new router from another company bought and the time I've been about a week no more disconnections, so I see the problem when Trednet router. Also repeated reseten of Trednetrouters has been unsuccessful. Every time I had a Verbindungsabbrauch I had to restart the router and then it was a long time back.

Wegens this error, the eigentich relatively useless makes the router only two stars (the range is really high)