Have you pushed the usb cable fully in on the bfp? It can feel fully in yet is t as it goes in quite far. I fell fowl to this a couple of times. Otherwise I haven’t seen the problem you mention on windows 10 or win 11.

Have you tried a different USB port? Are you using a usb hub? Probably obvious questions again lol.

The problem seems to be caused by the detestable Windows 10 Playback default device automatic plug and play function, the Recording list of devices seems to be fine. Also it is so weird, in my Cakewalk and Ableton DAW I can select the BF and use it with no problems even at low latency. If it was just for the Windows sounds I wouldn't care, the problem is that CPU goes very high and at some point I think for safety it shuts down the Windows Sounds service.

This problem seems either a power issue (not enough current from USB, you could check using an external power supply for the BF), or an older Windows installation with polluted registry. In that case you should see the svchost.exe blocking one CPU core for some time.

Ok finally problem solved!

I disabled the "Realtek Audio Universal Service" and now the BF connects and works perfectly fine. My realtek internal audio card still works fine, so disabling this service didn't stop the internal audio card. I think this service is related to sorround and other effects which I really don't need, I don't want to update the drivers for this service using the massive file from Realtek website, which is also from 2017, and open another can of worms, I had enough of troublshooting these problems, so I disabled the "Realtek Audio Universal" service and I'll continue to live happy with it.

Instructions for people that might have the same problem:
Open Services (type it in windows search) find the service "Realtek Audio Universal Service" right click on it, go to properties and in the General tab, from the drop down list under Startup Type select Disabled. When Windows 10 will restart this service won't run and if you had my same problem this will fix it.

A good strategy is to always perform a clean Windows installation because factory installations can be very bad.
And then to install only the real necessary driver for the hardware which is not yet covered by the Windows installation (check device manager):
- chipset
- graphic
- LAN
- USB
- WLAN / Bluetooth
- Sound
- Mousepad
and to leave out any add-on tool for e.g.: updating BIOS / chipset / drivers / WLAN management / additional tools for sound like in this case / blower control / ...
After the installation of each driver I check latency with LatencyMon to find out whether I got a bad driver or not.
These tools are quite often badly coded and can even decrease GUI performance and increase also DPC of your system significantly. I had this issue with an otherwise very good Lenovo Laptop of a friend.
It was at that time, where you had small 32GB SSDs built-in as accelerator for Hibernation and Harddisk accesses.
And even this has not been done correctly from the preinstallation from factory. They left out the disk acceleration which is quite important if you have a harddisk and no SSD built-in.
The overall problem with factory installation was, that the performance was so bad, that the mouse cursor only move reluctantly on the screen and the performance was like big shit.
After a proper reinstallation and some tuning for audio (which is beneficial as well for a normal office laptop) everything was fine and the device runs now since about 6y without any issue, I only had to perform a few upgrades here and there (antivirus, macrium reflect).
Finally I made my friend a present and replaced the HD by a SSD because I feared that the HD might fail at some time and now the system became even a little faster.

Tip: before you reinstall make some notes about the installed driver / HW.
For some notebooks you will find sometimes two or three different drivers depending on when the laptop was buillt and what parts were available. This makes it easiser to you to pick the proper drivers and everything goes faster / more smoothly.

If you have a laptop with two disks/SSDs then create a partition for Windows and all applications, sound libs.
User data / project data to another disk / partition.
The prepared folders for "Own files", "Own Music" I move to the saparate disk/partition by opening the properties, to get them out of your profile folder c:\users\loginname\XYZ

This makes it easier to restore a backup from last week with a disk imaging tool like Macrium reflect.

Then all your user data stays in "save harbor" on separate disk / partition.
If there is anything wrong after an upgrade or whatever then you can more easily recover so that also your Windows Registry stays very clean.

As I do not change much in my applications I only have to be careful with my Firefox bookmarks and to export them before doing such a recovery of my Windows installation, otherwise I get the status of bookmarks of the last day/week.
After restoring the system I re-import and all is fine.

If you organize your system well you can perform restores to the last known good working Windows backup within less than 10-15 minutes. Additionally useful here Macrium Reflects feature: "rapid delta restore".
It only writes back those disk blocks that need to be changed, therefore the recovery is ultra fast even on big TB SSDs. Usually its only a little that becomes changed on the Windows partition after an upgrade ...