I have a Naga Hex 2, which I really like. It recently lost sensitivity to horizontal movement. If I move the mouse slowly, the cursor doesn’t move. Moving the mouse fairly quickly, however works fine. Vertically it works as expected as well. I’ve had something similar happen to other mice in the past (different computers, etc.)

Is this common? Is the mouse broken? Has this happened to anyone else?

I can’t think of the words to bring back an answer in a search engine.