Originally Posted by the1freeMan
Yeah that's nothing and it happens with every mouse.
3320 has lower framerate and tracking speed than 3310, but also has configurable smoothing register (at least on the Logitech exclusive am010) and slightly better variance.
Btw HWcanucks mouse reviews are pretty poor.
Well true, but it's a different kind of review. As he isn't a competitive it's more an overview of the features/functionality. Nothing wrong with that. Generally speaking, you don't have to try to be something you're not to cater for some segment of the market, like Finalmouse is doing.