Having an issue with my mouse. It is a Logitech Performance MX. Works perfectly in every other environment.

What happens in LOTRO is that sometimes it either zooms OUT all the way or IN all the way, and won't remain somewhere in between. This is very annoying.
Usually a restart of the Game Client will fix the issue, but is keeps coming back.
I have W7 Pro, and I have installed the Logitech setpoint drivers, trying to solve this.

Any advice?