Help with getting the performance and lowest lag on craptop?

Even though I do have a much more powerful desktop, i’m gonna be stuck with my laptop for a few days, which is a HP Pavilion g6-1d60us. I’m on the latest stable and I can’t figure out how to achieve smooth scrolling with vsync, it appears somewhat choppy. Lag seems to be another issue. When I play Super Mario 1, there are countless times I fall into pits despite hitting the jump button at the right time. I usually don’t have this problem on my desktop with two 144hz monitors (one of which is a G-Sync display) I’m on Windows 7.