I have new computer install (Windows 11) and was having the same problems: When zoomed out, I was able to hear all the FX sounds on the whole map very loud but zoomed in I could barely hear any of the actions. I did not experience this on my old Windows 10 machine.

I fixed the problem by changing the following:

• Windows 11 setting: System > Sound > All sound devices > (Select your output device, your me it was "Speakers")
  - Audio enhancements: off
  - Spatial sound: off

I also have the additional sound drivers/software installed: Nahimic (by Steelseries). The following also help me:

• Audio > Effects On/off: did not seem to matter
• Audio > Gaming > Surround Sound > Disable: This is on, it creates an echo. Must be disabled.