So currently in my house we only have the one router and when want to play games such as CSGO and when i am the only person using the internet or my family are only using webpages I get 40ms ping which is good as I live in AUS. However when someone in my family starts watching YouTube, Netflix or my brother starts playing online games as well my ping will jump to plus 150ms ping which is unplayable for games like CS. I am wondering if I buy a wifi extender and for example put it in my room and had the rest of my family connect to the router directly and I connect to the extender would this help my ping