2014 S5 Premium Plus. I have an intermittent ticking sound coming from the front at slow speeds... And stops completely when the car comes to a stop. The perplexing thing is that it’s a steady sound that does not increase or decrease with engine speed. And stops completely when the car comes to a stop. I have taken it to the Audi dealer 4 separate times over the last two years and they can not find the problem. Even more frustratingly, it happens infrequently, and they could never replicate the sound. I have recorded the sound and posted it on my YouTube channel.

Please someone help me identify what this sound is.
Thank you