Updating Graphics card makes Minecraft lag?

I have a Nvidia Geforce GTX 760M on an Acer laptop, and when I updated it, it halved the FPS I was getting. Before, I got around 105+ FPS, but after I updated the drivers for it Minecraft started running at 30-40 FPS, despite the fact that is was on the same settings, and it was supposed to be a better version of the drivers. I have used system restore, and now it runs much smoother again, bu does anyone know why this happens? Any way to prevent this from happening in the future if I want to update?