What you can try to do for now is to right click on bf4.exe or the shortcut on your desktop and then go to the "compability tab" and then check the "Disable display scaling on high DPI settings" box and save. Hopefully that will work.
If not then you press Alt + Tab And switch to desktop then so now u have a icon of running battlefield 4 in taskbar so continue your game by click on that icon and now u got it hope this works for every one (This solution might work when you check the "disable display scaling on high DPI settings)
let me know what happens 😉