K2HE keeps getting “stuck” on a key.

I got a K2 HE for Christmas. I’m using the dongle. Pretty frequently I will be typing and it starts to lag and hold keys down. For instance if I type test it’ll come out like ttttttttttteeeeeesssssssssssssssttttttttttt, but usually even longer. The keyboard usually disconnects and reconnects a few times when this happens. Has anyone else had this issue and is there a fix?