Quote from dyfe123 »
Hey WaterQuarks! Its most likely a Java issue. Javas not that great :P. Anyways I can only recommend uninstalling java and re installing a the newest version. If that does not work you can try increasing the RAM allocated towards Minecraft. There are plenty of videos that can help you. Hope this helps!
Wouldn't recommend increasing RAM allocation, in most cases high amounts of allocated RAM actually decreases fps due to the Java Garbage Collector collecting too much garbage before emptying. 1GB (pretty sure that's the default amount of RAM allocated) is perfect for most unmodded Minecraft installations.