Question / Help Game Audio sounds strange.

[bensfunworld]

I seem to have this problem with Shadowplay too but the game sounds strange, almost like it's lacking any bass. I'm not sure what is causing this issue and haven't been able to find anything online. Here's a video (don't mind the dumb mic commentary just messing around.)
https://www.youtube.com/watch?v=Vjtn3TgVuVU