So everytime I start rohan my browser stops working, everytime i close rohan my browser, starts working

Ive tried this with chrome firefox and microsoft edge, all of them stop working once rohan have started, and starts working again once i close..

what is going on here? o-o this started today, I always "play" rohan in the background while i do other things like homework or watching a movie or other games. but i can no longer do that since my browser will not work if i have the game on :/