How do you know?
Unplug the mouse and use the keyboard. The will tell you if the mouse is doing it.
Look here:
http://www.computerhope.com/issues/ch000791.htmHow to navigate Windows using a keyboard
Navigating Microsoft Windows using the keyboard for many commonly performed tasks can dramatically increase your productivity. Also, a situation may arise when the mouse stops functioning or you need to work on a computer without one. The following sections contain many key combinations used to navigate Windows using your keyboard. You can navigate this document by clicking on one of the links below, or you can scroll through the entire document and learn all of the methods individually.
Note: Some of these key combinations have different effects or not work the same way for Windows 8 and 8.1
...
In the Start menu, you can use the arrow keys on the keyboard to move up, down, left, or right within the Start menu. Once you've located the program you want to run, press the Enter key.
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Closing a window
Press the Ctrl and F4 keys on the keyboard at the same time to close the current open program or window.
Users may also press the Alt and spacebar keys at the same time, then arrow down to the Close or Exit option in the menu and press Enter.
Try it ans see. Unplug the mouse, it stutters too much.
This link helps explain what I am talking about.
https://bugzilla.redhat.com/show_bug.cgi?id=1227039Yes, that is about the issue in Linux, but it also happens in Windows. The link below is about mouse trouble in Windows 7.
http://www.tomshardware.com/answers/id-2998176/mouse-audio-stuttering-usable.htmlAnd it also happens with Apple PCs. So, it can be a common problem. You need to make sure it is not that mouse. If it is not the mouse, then we can look at another possibility.
The mouse problem has been widely reported and is not a new issue. It is caused by a dirty mouse, a broken mouse, or the wrong driver for the mouse. A broken wire inside the cable can cause very strange mouse behavior.
Example:
... I noticed that the mouse is basically clicking multiple times in 1 click. It just opened FOUR tabs when I clicked a link once.
If I try to close a tab with the middle button, it sometimes closes multiple tabs, too. ...
From www.mozillazine.org forum. It is a support forum for Firefox.