Thanks for your reply. It is good to know that I am not alone in my quest for an updated Synaptics audio driver.
Since I manage a number of affected laptops - not just my own - I will wait until an officially tested fix is available. I have to weigh the downside of missing out on the 20H2 version for now against the risk of blue screens due to audio driver incompatibility. Even just one person losing data is too much. From my experience with DOS and Windows, I have learned to be very cautious about video and audio drivers especially when PC's are used in a business setting.