In case you don't ever manage to disable it, I did want to say something regarding the immersion aspect which hopefully might make it easier to live with.
If this were a WWII FPS or something similar I would completely agree with you. However you have to keep in mind that we're, from an immersion standpoint, the person strapped into the cockpit of a futuristic, bipedal mechanized war machine. One that comes complete with sophisticated targeting and positioning sensors. With that mindset it's really not that big of a stretch, for me at least, to think that it might also include some sort of hit detection with an audible alert built into its sensor suite. I guess that's why the little bleep when I hit something never really bothered me. In a way it even kinda makes sense from that viewpoint.
To be honest I'm surprised that there aren't a lot
more audible alerts, beeps, boops, and whistles going off at all times. Compared to the cockpit of a modern day air superiority fighter, our mechs are actually a little on the quiet side.
