Windows 1803 update seem to not fix problem entirely but it's better than 1703/1709 when it comes to WA.
Still not able to run the game without compatibility mode or unchecking "disable fullscreen optimizations", but at least now I'm able to use compatibility with Win8 (in earlier update only compatibility that was allowed was XP, which made game run much faster).
Win8 compatibility do feel like there's a bit of "input delay", but XP one was just too furious. Now need to get used to Win7/8/10 feel, all over again.

Also, this update fixed IntesKeyChange too. In 1709 I needed to run it as administrator and then disable before entering the actual game. StepS proposed this run as admin solution, obviously.
There, just a bit info on new update if anyone had similar issues.