Hmm. The lag and stutter thing shouldn't be happening. Are you running the game at a resolution that is different from the default one for your laptop? Does changing the base resolution of your computer change things any?
If you can get the game to run in a more stable manner and without the performance issues, you may want to stay in windowed mode and use this tool to make it look like full screen. It has helped many players on Win 10 who get screen tears and worse in full screen even after their frame rates are stabilized.
https://westechsolutions.net/sites/WindowedBorderlessGaming
