Kinect V2 and Azure USB controller drama

I recently upgraded my PC workstation, and decided to go with an AMD CPU based motherboard and chipset (AMD 7950x + B650 AX, of course with an nvidia RTX GPU). 

My reasoning for going with an AMD CPU was that the current top Intel models are the last of their socket generation, meaning if I wanted to upgrade my CPU in the future I'd have to buy an entirely new motherboard. On the other hand AMD has pledged a few years of support for the AM5 architecture. Cool, I like flexibility, and the performance is pretty equal, if not better.

I spent a month speccing this PC, researching each component meticulously but silly old me forgot something: Kinect. They are notoriously sensitive to USB controller chips. An issue I never really had to face as I've always been an Intel user and specced installations with Intel as well.

Turns out AMD chipsets most often come with ASMedia USB controller chips which are explicitly not supported by either Kinect V2 or Azure.

No problem, I have free PCIe slots, and after some research I found some old forum post about the V2 compatibility and they listed a cheap ~15 EUR one that they claimed worked (based on Fresco FL1100). Arrived next day from Amazon, didn't work.

I then ordered another with UPD720201 inside, https://www.amazon.de/gp/product/B0BPRWR4PV for ~25 EUR.

Kinect V2 now works flawlessly with this one, success!

...

Or so I thought... I borrowed Acrylicode's Orbbec Femto Bolt, the "new" Kinect Azure. 

Spent the last night testing vigorously, and found some weird latency issue when in Azure mode. The "raw" Orbbec TOPs work well though, but if I want to use the Azure TOP and both Color + PlayerIndex/Skeletontracking, there's a considerable latency between the two streams as well as skips. Kinda defeats the purpose. I updated the firmware which slightly improved the situation, but still non-presentable.

Did some more research and the manufacturer recommends a very specific USB 3.2 PCIe controller which costs a whopping 100 EUR. https://www.amazon.de/gp/product/B00HJZEA2S?psc=1

Stay tuned...