So, I've been a pretty faithful Logitech user over the years.
I've currently got an M510, purchased it two years ago this week. Huh.

Anyway, it suddenly started acting like it is double-clicking on a single click.
I tried going into mouse settings and slowing down the click speed, but, it hasn't worked.

I don't seem to have a problem with the laptops built in mouse buttons.

Anyone have any suggestions about what I could do to fix this?