Archicad 13 running on a MacBook Pro & OSX 10.6
When hovering the mouse over the objects (walls, windows, doors), the computer starts constantly redrawing the screen several times a second. This makes it quite difficult to make selections because the screen redraws just as object edges highlight but before you can click on them. If you zoom way in, you can see that the problem occurs while the cursor is over the lines indicating the wall layers but NOT if over the core of the wall. Likewise, it happens with the cursor over the outline of a door or window but not while over the door/window frame.
This problem also manifests while zooming with the mouse wheel - if the cursor is over an empty area, everything works normally, but if it is over an object (or an object appears under it while zooming) it begins redrawing faster than the zoom and begins "snapping back", i.e. zooming in one increment but then redrawing back at the previous zoom level, once for each wheel increment.
Any help would be appreciated.
