Over the past year or so our office has been experiencing Revit performance issues. Whenever we have 2 or more people in a model of any size we will randomly get the Revit "Not responding" message along with the cursor wheel spin even when no task is being performed. Sometimes I will even get the "Model is not currently available" message pop up when no one is synchronizing. This issue seems to happen when certain individuals with Microsoft Surface Books are in the model. Has anyone else run into anything like this? Does any know if Surface books cause any issues in a work shared environment? Thank you in advance!