We recently started testing a couple Latitude 5520 laptops.  So far, I'm running into some Bluetooth issues. I have completely reloaded the OS, and installed the newest Drivers one by one before even connecting to the internet.

I'm using a Logitech Bluetooth Keyboard, and Logitech Bluetooth Mouse.  Again, I have all newest drivers and BIOS from the Dell website.  I'm running Windows 10 20H2, but also previously tested with 2004 and had the same results.

The issue with the mouse is that at random the cursor will stop moving, then suddenly catch up.  

The Keyboard will randomly start typing a letter a bunch of times before it catches up to what I was typing.  Kind of like there was a "hang up".  I was pressing backspace and ended up deleting 3 or 4 words before it stopped.  Or begin to type, and it types 5-6 of the first letter, then picks up the rest of what was typed after it catches up to me.

The issues never happened on my Latitude 5500 on 1903 or 1909 versions using the same Bluetooth keyboard and mouse.

I have turned off the Power Management on the USB HUBs and Controllers from Device Manager with no help.  Also did the same in the Human Interface Devices section where a couple Bluetooth devices were listed.

Any thoughts or suggestions?