The lag for your gaming is not something you can improve from your end. It is occurring upstream from you. Perhaps it is intentional by your university network when they give priority to web pages (this is common on university networks to manage bandwidth for the traffic that matters - academics, not recreation). Perhaps it is just a congested network that you don't notice it so much for ordinary web surfing but it is more noticable when gaming. Perhaps it is something way upstream in the general routing from your university to the game server. These are not things that you can influence.