My issue seems related. I now have to click-pause-click-pause-click to register a single (left) click using a Microsoft Modern BT Mouse. I think the problem has to be in the drivers. The driver version is 10.0.19041.488 which is dated 6/21/2006.
This seems completely wrong: the driver that is being used by Windows 10 was developed before Windows Vista was released? When I click "Update Drivers" the response is that the most recent driver is installed. Did anyone at Microsoft do any compatibility checking for the most recent updates to Windows 10. My problems started with the roll-out of Win10 Version 2004 build 19041.508.
I does no harm to ask, probably no good either, but Microsoft please address this issue.
In the meantime, it's back to a wired mouse.