Can you enable the nvidia optimus dGPU opt-in said in this url http://blog.crimsonowl.com/2014/02/java-a-exe-launcher-and-nvidia-optimus/
Intel internal gpu is not enough to handle the game with all graphic set to maximum.
It's also not true to set the java binary always use dGPU.Pls add the trick so Laptop players with dual graphic card can happy.
Thx.
UPDATE: I built the game myself with your source code so I don't know if such solution is already in the launcher.I saw your game entirely written in java which is a bit hard to implement such trick.