All sounds in EU4 play like this. I've tried fresh installs (manually deleting folders in steam / my documents / paradox launchers ), but no avail.
I played without this issue till a few months ago with the same 1.34 / hardware / firmware / drives. I upgraded from Windows 10 to 11, which is probably the issue.
No issues with sounds on HOI4 and CK3 currently. I'd like to fix this issue before Dominion releases so I can get back to EU4. Please let me know if you need any logs.