Game sound & music stuttering/looping

I'm having a big issue with my game and no idea how to fix it. No mods are involved.

My game has a totally weird sound bug/glitch as soon as I start it. The music is looping in some parts (check the video) while also stuttering. Besides the sound the game is fully running fine, no issues with the gameplay at all.

It can't be related to my pc specs, because the pc itself is great (check the picture I've put in, it shows my pc specs)

Thing's I've tried so far:
- Putting out the whole ''the sims 4'' folder, so that the game generates a new one.
- REINSTALLING the game.
- Putting the whole sims & EA app folder as exception for the antivirus.
- updating every driver (NIVIDIA, windows sound drivers, etc).
- Changing the in-game settings from full screen to windowed & to fullscreen-windowed.
- Changing to directx9 (idk, I am hopeless)
- repairing the game

and just to say it again: no mods are in use.

In the main menu it's the general music stuttering/looping, but when im in my save, even the sims sounds loop and stutter in parts, it's driving me crazy. As example when my sim say's ''sul sul!'' it will sometimes put another ''sul sul!'' right behind it. Same goes for baby crying and all kinds of other sounds.

I have also tried to switch between multiple sound devices and it doesn't change a thing. I tried two different headasets + the monitor speaker. I also made sure that my main headset is set to default when I used it.

please anyone help me, because I'm going crazy here :D