I recently downloaded Revit 2015 on a 3k display laptop. It was giving me many problems and not working at all. The bottom kept flashing and the side where properties need to be was blank. The problem persisted until i switched my display zoom from 200% to 150%. At 150%, Revit works perfectly but it is really inconvenient to have to switch back and forth from 200% to 150% especially since i have to log off every time. Is there a way for Revit to work at 200% zoom on a 3k display.