It's interesting this thread comes up now when in the last two days I've started experiencing input lag on my Magic Trackpad 2, which makes it "go all over the place." 😕
In my case, it seems to be triggered when I put my iPhone (which has Bluetooth enabled) in a certain place on my desk near an Anker USB hub. But I've been doing that for a long time, and it's only recently that it's started giving me trouble.
😡