I am on 20H2 now after signing up for Windows Insider. I have that level running on 3 Win10ProX64 systems. Only one of them (my 'daily driver' so to speak) had the conexant issues. I did nothing overtly to bypass the restrictions to get 2004, I simply
went to the Windows download and installed it in spite of it having reported issues. I have seen no issues in about 1 months worth of daily usage. My one disclaimer is that I'm not a gamer, I use my laptop for MS Office and Firefox surfing mainly. I sometimes
watch Amazon Prime videos too along with a couple of Zoom sessions.
My opinion is that the conexant issues for the 2004 update will never be resolved. The limited resources that Synaptics (the current owner of the conexant drivers) has devoted for this will probably spend their time on whatever comes beyond the 2004 update.