[issue] Sound crackling with interior cam

Hello guys

I bought this game few days ago and I have a big problem with it.
When I'm in the car (interior cam), the sound is crackling.

There's the proof on video :

Do you have any ideas to solve it?
I picked up this bug tonight. Been running fine for about 30 hours so far. At first I was only trying in VR, so I got rid of the headset to see if the problem was caused by oculus. Same deal running through the speakers. 2 different cars 2 different tracks, all in cockpit view. Also had to re assign my CSW 2.5 and pedals (usb)

Just fixed the audio by putting the sound effects back to 64 like davehenrie suggested.
Thank you sir