It’s just a shot in the dark, but maybe these dropouts are caused by interferences from a near USB3 port.
for example:
I actually had a similar issue with a wireless keyboard/mouse combination which suffered from erratic dropouts, lags and hangs…
From the day i used an extension cable (to gain some distance) and an older USB2 hub to plug the little receiver into, all the problems were gone.
This is at least something which can be easily tested with no bigger efforts…
Good luck with that!
Erik