I'm running the latest Insider Fast Ring of Windows 10 on my desktop and an older laptop, so I updated my Surface Book 2 to the same. Come to find out, it gave me lots of issues. After talking with someone at Microsoft, they recommended that I roll back my Windows 10 version to the latest public release, and after I did this, everything that I had issues with started working again.
Specifically, I have a Samsung Odyssey HMD that wouldn't work with my Surface Book 2, but after rolling back Windows 10 to the public release and installed the Surface app and drivers, it started working like a charm. I wouldn't be surprised if this if the Insider Edition might be the cause of any problems you might be having.
Sent from my SM-G955U using Tapatalk