So, I’ve just had this issue. Here’s how to fix it.
Found a solution that worked for me. Seems like the game launching in borderless mode was an issue. I went to my PROFSAVE_profile file in the Battlefield 4 settings and edited the following lines to look like: GstRender.FullscreenEnabled 1 GstRender.FullscreenMode 0 GstRender.FullscreenScreen 0