Originally Posted by
Dewote
Oh okay, in that case try this:
1. Open your nVidia control panel
2. Select Manage 3D Settings
3. Select tab Program Settings
4. Click Add
5. Navigate to C:\Program Files\Java\jre6\bin (doesn't matter if it's 64-bit or not, it matches by image name)
6. Select javaw.exe and click OK
7. Select javaw.exe in the drop down box
8. Scroll down to Vertical sync and change it to Force on
9. Also change Triple buffering to On as this helps vertical sync performance, as Java apparently uses OpenGL (needs citation tbh)
10. Click Apply
Minecraft isn't fully optimized yet, so high end GPU's tend to overkill it.
This will force Vsync for minecraft.