12d Model

I am using v12.00. the cursor leaves very small 'x' across the screen. while models and strings can be added to the view, the shade function also does not work. ffels like its crashing or the PC cannot process the shade function so locks everything else up. No warnings in the output window or backgr...

hi,
when I open a model in this view, the the cursor tracks all over it as I use the mouse. How do I toggle this off???
driving me crazy.