I also did this (mentioned it a few pages back in this thread). I picked up the ASUS USB-BT500 adapter. Everything worked fine; served to verify it seems to be specifically a Marvell/ Windows compatibility issue. Quite annoyed about losing the only usb port available though. Adapter was plug-and-play with self-installed drivers, no disc or download needed and seems to be readily available in most stores (I'm in Canada where Staples, Best Buy and Amazon all had it).
Anyhow, I get to do a proper clean-up and reinstall as now my wifi seems to be cutting out regularly as well. Also a Marvell adapter. Not sure that it's related, but that along with it consistently shutting down randomly means at this point, a reinstall and fresh files is the way to go. See how long I can keep this machine running since judging by what's in store with Windows 11, I'm thinking once this machine dies, I'll be going back to Apple. Never had to deal with any of this **** when I used a macbook pro. But I really liked the surface form factor, you know? Ironically, I'm stuck using a old 11" ASUS zenbook from 2013 right now since the surface has been so problematic. Updated the darn thing to windows 10 from 8.1 this week and it's running smooth as can be, working like a dream with all my peripherals, am thoroughly impressed. Meanwhile, my surface is from 2017 and I'm ready to use it as a frisbee. Smh. Needless to say, if I do buy another windows machine in the future, it'll probably be an ASUS.