I am using Windows 7 on a Dell Inspiron 660s and the mouse is a wired optical mouse that was included.
When I click to open a new tab my mouse opens several at once. If I click to open a link it also opens several of the same in new windows. When I attempt to highlight a word it will highlight it but not long enough to copy it. I need to keep doing it until it works.
I've checked Malwarebytes to see if there was anything that might be causing it but there was nothing.
I also changed the settings to lower the speed of the mouse but that didn't help.
There doesn't appear to be a setting for click speed.
I also looked in Firefox to see if there was a different setting but I don't see anything that will change it from doing what it is doing.
I also cleaned it and looked for dust or anything that might be affecting it but it is clean.
I don't know what else to do except to get a new one but if it is the settings then that won't change anything and I'd really like to fix it if possible.