I am using Solidworks Standard 2015 SP 4 and I am experiencing very poor performance when I attempt to create a new sketch. Solidworks can open previously made assemblies that are fairly complex and I can add in new components without any problems. I am able to create a new sketch and select a plane, however as soon as I go to draw using any of the sketch tools Solidworks either takes a couple of minutes to process it or it freezes completely. Does anyone have any advice/help/solutions for this issue?