Do I need a new router?

I have a zyxel router which came with my broadband. It worked fine wirelessly in my old house, when the router was next to the PC, however since I have moved it often cuts out when its being used wirelessly, both up stairs (2 stories) and on the same floor. I have tried plugging in my PC to the router using an... show more I have a zyxel router which came with my broadband. It worked fine wirelessly in my old house, when the router was next to the PC, however since I have moved it often cuts out when its being used wirelessly, both up stairs (2 stories) and on the same floor. I have tried plugging in my PC to the router using an ethernet cable, and it works fine then so I've come to the conclusion that it is a wireless problem. Would a new router with better wireless solve this problem, and if so which one?

Thanks
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