Hi all,just experienced the same problem after Windows 10 April Update here in Germany some days ago. Turning off this focus assist settings in windows solved the problem in parts because I only dropped back to desktop for only 1 second (before it was around 5-6 seconds). Now a guildie gave me this tip: In the GW2 ingame graphics settings I changed my resolution to "Windowed Fullscreen". Now the problem has entirely disappeared.