After months of delaying, I have recently applied the Win10 Fall Creators Update to my PC, and immediately I started experiencing freezes when alt-tabbing out of the game. It only happens if the game is in Fullscreen mode, when it's loading assets (especially building textures). Here is a video: https://www.youtube.com/watch?v=L0P6l6ZSi-Y
The freezes happen both in SP and MP, regardless of BattlEye status, even if GeForce Experience is disabled. There are no error messages, and the Task Manager is showing arma3_x64.exe as "Not responding" with 0% CPU usage. My game files are on a regular hard drive. I am able to reproduce the freeze on every attempt. I am on the stable branch, and have not tried on the dev branch.