1.9 Lag

For whatever reason, 1.9 seems to lag a lot (FPS lag). Versions 1.8.9 and older work just fine. Even the main menu would lag. I'm using VBO's, Vsync, OptiFine, min render distance, 3GB ram approx, and other settings everybody suggests that would improve lag. Everything else on my computer works fine. Please do not mention getting a new computer as it is not possible. Also, do I have to update drivers? Is it possible for you to add a setting that let's you run on older drivers?