I totally relate to audio processing problems. If I'm not paying attention to someone and they talk to me they will have to repeat it because I have no idea what was said.
RSI is caused by repetitive motions. No mouse can help that. Look at exercise to combat RSI.
I have carpel tunnel syndrome on my right hand after using mice for dozens of years. It became so painful I learned to use a computer mouse with my left hand.
That worked for years until I squeezed a couple dozen lemons my neighbor gave me. Of course I used my right hand. Had pain I cannot describe, I could not function. The doctor had shoot cortisone into my wrist.
Dems are weak.