Setting up an E6530 for a particular game

I recently bought a high spec E6530 (see signature) and installed Minecraft for my son. One of the mods we added has quite a bit of graphics draw apparently, because it freezes up at certain points. I downloaded the latest NVIDIA drivers and NVIDIA Control Panel, and set it to use the GPU when he is playing the game, but his friend was over on Sunday and brought along his base mode i5 E5530 with the standard def screen, and his didn't freeze once, running the same game. What other settings should I change, or is it a symptom of the FHD screen? The FHD screen is much prettier to look] at though ;-)

 

Any idea what GPU the i5 E5530 has?

 

I don't know exactly which i5 my son's friend's E5530 has, but it only has the integrated GPU, and probably no more than 4GB RAM.

 

Hmm, if the i5 machine only has the iGPU, then I wonder how it would run on your son's machine with the NVIDIA control panel set to use the i7 iGPU? If it runs better on the iGPU alone, that at least narrows the issue to the dedicated GPU.

After that I would probably try rolling back one NVIDIA driver.