Finally found the curlpit on audio ticks, from the very start and since 2020 and early access I ve noticed audio ticks on some car models at low speed, or sometimes even on high speeds, Im playing with headphones and frankly those are disturbing. Take the BMW GTR2004 at low speed (pit stop speed limiter speed) and you'll notice a very very low volume sound tick every 2 seconds, thought it was due to Engine sounds, but actually when you cut off general car volume at zero there is no audio tick, nothing - at any speed when you raise the volume of general car volume to 10 or 20, the audio ticks are back. I have a very sharp hearing and it may not be noticable by everyone. but its a known issue. edit: after some more tinkering, found a workaround, its due to oversaturation of audio balance on motherboard soundcards, if you lower your general windows volume to 70 instead of 100 the ticks are barely noticable, but AMS2 is the only game where it's problematic whereas many other games are not plagued by this issue.
I ve updated the list of audio issues per category, per car its a work in progress but Im planning to do all cars DLCs I do own as well. - headphones volume at 70, all sound settings at 50.