After installing PC patch 1.9 and DX11 updates as well as HD textures. When I click the right mouse button the game zooms the camera in 500% and I am having problems killing stuff.anyone known how to fix this.

I Know similar effects when altering the "drawnear" console command. Open the console and Type in "r" and then press TAB. Search for the command and play around with it. Are you using some Kind of System.cfg or autoexec?

No. only thing I have done is update to patch 1.9+DX11+HD textures

and I have installed the maldo HD pack but I have played the game without it and it still zooms in too far.

Would be interesting to see the video.