I have a router in my house and whenever i'm playing a game with no-one on the wifi I get good ping on csgo but whenever 2 or more people join the network at start browsing the internet my ping on the game would rise up to 1000+ resulting in the game unplayable, so my speculation is that there are too many people on the router at the same time using the internet causing a slowdown, so my question is that if i get another router and use that solely for my computer would that eliminate the bottleneck and resulting in a better connection for me? Thanks everyone. 
