High Frequency Noise Caused by Moving the Mouse

recently, I have experience very weird problem.
old computer(but it works fine) has make high frequency noise whenever I move the mouse.
I could not stand. and I start to find it.

many post tell about it. "oh! it's grounding problem. check your electricity!"
but, my house has perfect grounding already.

and then, someone tell about it. "oh, it's problem of power options on the mainboard. disable the power saving mode!"
but, it's not works properly.

finally, I thought that it's problem of mouse own self.
so, I had check the mouse options. and figured out it.
the suspect is mouse's "Polling-Rate".

Polling-Rate is the rate of checking mouse pointer location.
if your mouse has high Pollin-Rate, you can get more precise pointing.
but it has very high frequency(over 500hz), and makes unpleasant noise forward to speaker.

(This is logitech mouse G-Hub utility. watch yellow box.)

so I have down Polling-Rate from 1000hz to 125hz and DPI from 1600 to 800.

of course high DPI is not main suspect, but I feel that very high DPI help high frequency noise.

so if you has suffer from high frequency noise from mouse, change the Polling-Rate options or get the mouse that has low Polling-Rate.