I have one, too, and I hate it. I haven't had the jerkiness problem, but rather that it takes *forever* to reconnect after it "sleeps." Occasionally it wouldn't reconnect without a reboot. I've tried new batteries to no avail.
The battery compartment door is quite flimsy, as well.
It was so frustrating that I bought a corded mouse.
Maybe it's just mine and it's defective, but I didn't like it.
FWIW,
Mike