USB BT dongle might not guarantee to work flawlessly. I am currently using a Ugreen dongle. When direct plug n play without installing the official ugreen drivers, can successfully pair with my keychron k2 kb and razer basilisk hyperspeed mouse but if i try to pair with wirelsss earbuds, i will get audio drops every 5-6 seconds. Test on 3 different pair of TWS earbuds i own and all same problem.
Installing the CRS harmony drivers will solve the audio drop issue but for some unknown reason, now my razer mouse can't be paired. While i can switch to dongle mode for the mouse, i prefer BT mode for longer battery life so i choose to uninstall the drivers and not use wireless earbuds on my pc.