I also had this a setting issue... this really helped with the camera. Did not fix the above, but now I can tank!

Now the camera setting that was giving me trouble is this:

In character configuration, there is a target tab. On that tab, there is target settings.

There are three available choice: make sure "ruin my day" is not checked!

It's obvious in hindsight. Smile

No, three check boxes. I had "auto lock on target when initiating auto-attack" checked. This was the source of my pain.