I have used Sketchup for about a year. The last Days I have had problems with marking objects with the select Arrow. When I try to select an object I dont see the dotted line and it takes several seconds Before I can see that the object has been marked. What can the reason for this be?
You’re referring to a slow down with the Select tool. There are already a number of threads on this topic. Scroll down through the list or search for “unbearable delay”.