If your game fails to launch or you encounter framerate drops try updating to Java 1.8. A 64 bit operating system with Java 1.8 installed is highly recommended.
You can download Java 1.8 here: http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html
You can download Java 1.8 here: http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html