Windows 10 has caused performance issues in games since the beginning. And they know that, because some of them have specifically been fixed with their patches.
Why admit only this one now? So that the other ones get ignored even more and people will start to think this abysmal performance is normal and never was better?
If your customers need to use programs like Intelligent Standby List Cleaner and others to get rid of stutters that are caused because of your incompetence, then you should start to worry. MS is starting to act like fucking politicians. They can do what they want, because even the media isnt talking about their mistakes anymore.
I have given up on waiting for BIS to come back to their senses and do a real ArmA 2 successor.