Anyone that has been subjected to the hesitation and or pause of their mouse when moving the cursor over the a cogo point I offer this fix. This fix is better than turning off tool-tips all together as it's only when the STYLE is shown in the tooltip that the pause will occur. This way you can still have other information displayed via a tool-tip roll-over.
I'm not sure if this is only an issue when Raster Design is installed but here it is for anyone that can use it.
http://forums.autodesk.com/t5/AutoCAD-Civil-3D/Civil-and-Raster-Design-cogo-point-freezes/m-p/291360...