Possible solution "work-around" for those still having issues... I tried the "focus assist" and "disable full screen notification" suggestions and they helped some but I was still seeing the desktop between maps so I tried dozens of other things and here's what worked for me: Hardware acceleration: disable it in any/all apps that you may have running in the background including: chrome, discord, spotify etc. TIP: to find out what apps are currently using your GPU go into your NVIDIA control panel and in the "Desktop" menu tick "Display GPU activity Icon in the notification area" then click on the icon in the notifcation areaCompatibility Mode: right click Gw2-64.exe -> properties -> Compatibility -> "Change settings for all users" -> Run this program in compatibility mode for "Windows 7"Run As Administrator: on the same "Compatibility for all users" dialog, check "Run this program as an administrator" apply and saveCoherentUI_Host.exe: make the same changes to this as you did to Gw2-64.exe (above). It's in the bin64 folder of the GW2. NOTE: this step might only be required if you're also using GeForce Experience or another game overlayGeForce Experience (or any other overlays you use with GW2): I made the same changes here as well and GeForce Experience is working perfectly for me with GW2 for the first time ever. I can bring up the overlay, enable/disable instant replay and close the overlay without everything locking up.Video proof of the fix on my system recorded with GeForce Experience:
That's about it. Everything seems to be working (dare I say) better than ever for me at the moment. Hopefully this info will help someone else. Good luck!