Lag and audio issues in game

Hello, not sure if this is a thing or not but I downloaded one of the more popular GC games and everything was going great until I reached a certain area in the map. I experience a constant lag sound that sounds like *wamp* *wamp* *wamp* *wamp* with game audio mixed in constantly while in that certain area. Once I reach any other part of the map, it's totally fine. Does anyone have any idea how I could fix this? Thanks in advance