My brother and I have both started sharing our Cisco-Linksys WRT400N router for a few weeks now. We've both been playing PS4 at the same time together on our router. My PS4 is only a foot away from the router so my connection on my PS4 is always at 100%. While his PS4 is located in two rooms away and he usually gets around 85% on average. Sometimes his will drop below 80 and once in a great while it'll go up to 95% for a short while. I don't have much knowledge on networking so I was wondering if there are any tips to improve his connection. For example, if I switch to a wired connection for my PS4 while his is still wireless, will that help improve his at all? We've had this router for a few years now, is it time to replace it? If so, what would be the best router for around $100 that has good range but also can handle both of us playing at the same time?