My ArcGIS 10.5 performance is very slow just in opening some thinks like: Options, tables, labels, arctoolbox, draw menu ect. It open the mentioned things in about 3 minutes. I have tried different solutions like: l deleted Normal.mxt, remove and reinstalled the ArcGIS, restore my PC and tried more solutions that I found in Internet but no one was useful to solve the problem. My Computer is Dell 5559 cori7 2.5GHz 4cpus, 8GB ram and 4GB Graphic dedicated memory This is bothering me. What is the problem?