I am now very glad that I ditched Windwoes for Linux, However... I am trying to solve an issue for a lady who needs Winders for her work. The problem appears to be a common one, from my searching, but NOTHING I've tried seems to work. I have tried

Re-installing Windoze - 5 times now
Driver Rollback - I can't convince winders to stop re-installing the "newer" drivers on re-boot
Change settings on sound card - None of the alternates have any effect.
Edit Registry - Nothing works there either
Edit Power saving - ditto
Edit CPU throttling - ditto

Can anyone tell me how to convince Winwoes 10 that sound is supposed to be clear and precise and not like someone has stuck a frog in a blender,

I know the hardware is OK because it works fine when I boot from a Live Linux disk,