Having trouble running Minecraft

[triggrhappy94]

So, I go a new laptop and one of the first games I put on it. It was working fine for a while, but then its performance started to dip. First I had to set the game's render distance to short, then tiny. Then I had to turn textures from "fancy" to "fast" just so the frame rate would behave, but that only really made cutting down trees harder. Now, the games acting up again. Now whenever I use the right MB the game lags for a second and it counts one mouse click as two. So when I use a bucket Im picking up the water then putting it back down, and its taking me twice as long to use glass. Im not sure what's causing this lack of performance.
Any advice?

Spoiler: System Specs

OP: Windows 7
CPU: Intel i3 380M @ 2.53GHz
RAM: 4GB
Graphics: 1722MB
Ask if you want anymore information

 

[ToastiestZombie]

Have you put advanced open gl off, that ruins the framerate in lower end computers. I could also reccomend putting smooth lighting off

 

[Woodsey]

Draw distance is the biggest frame killer.