I just found out that this also happens with only the Unreal Engine Launcher running. This makes me strongly believe that the issue isn't that Unreal Editor is a too heavy and eats up resources, but something else, as the Launcher is just a lightweight application that launches the editor, handles u...

Hi, When Unreal Engine 4 Editor is open, desktop switching is very slow. It takes some 6 - 10 seconds for all windows to appear on my fairly powerful PC. My specs: Intel i5 2500k Nvidia 560TI 4GB RAM Windows 8.1, 64-bit Please try to fix this. Thanks. EDIT: I didn't test this on other comparable PCs...