A game I've been getting into recently it's called Mechabellum, it's a autobattler so no reflexes required! Matches are short so I wouldn't really call it stressful unless the idea of losing reaaaaaallly stresses you out. I don't think you should have any issues running it on that laptop, and it's only 15 dollars. While there's choices to be made every round it doesn't feel overwhelming but it's still a deep game that you can sink your teeth into! Good if you like strategic thinking, and you can accept and adapt to consequences and mistakes or even just bad breaks.