I ran into a few stutters that affected my gameplay but for the most part, I could play Breakneck well, or at least almost every time I crashed was my fault and not BlueStacks'. I use a Matebook X Pro which isn't a powerhouse but does have an MX150 in it to give it a little extra oomph.
Performance of BlueStacks is going to vary depending on your hardware.
This is a great addition to BlueStacks and makes it easy to play games like PUBG, some would say too easy. You can map keys on a per game basis, create custom tap spots on your screen that you can map to specific keys, and even use you mouse to aim and shoot (though many would consider that unfair). BlueStacks 4 allows you to create custom keyboard maps to make sure that you can play mobile games with your keyboard setup. One of the most important features for an emulator is keyboard mapping.
