It there a way to speed up the prehighlightselection (other than switching it off or buying a new graphics adapter, it's not yet friday) I have two systems One has a Quadro FX1500 graphics adapter which prehighlights way faster than my other newer system that has a Quadro FX3800 machine details Quadro FX1500, winxppro, graphics driver 162.65 machine details Quadro FX3800, windows7 proffesional 64bit, graphics driver 191.75 both machines run Pro/E wildfire 3 build M160 32bit on xp pro-> fx1500 XP 64bit on windows7 ->fx3800 A second question related to prehighlighting Has there been a change in the way it works between wf3 and wf4 or wf5 What I see in wf3 is that if I hoover over the model tree the corresponding models are prehighlighted and stay highlighted until I hoover further What I see in wf4/wf5 is that a model is highlighted only briefly during the movement of the mousepointer from one line to the next in the model tree Are there new config options I need to set to get back the WF3 prehighlight behaviour ? This thread is inactive and closed by the PTC Community Management Team. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. You may also use "Start a topic" button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist.