1. I am pretty sure you are new to forums.. That goes in your signature and you don't use it more than once
2. Spam m9
3. This should be in bugs/glitches
4. It's probably just your computer or your minecraft.. it is fine for literally EVERYONE else! But the thing about jungle, the map lags a lot, but not as much that it would crash your game. You probably just have like 1,000,000 worlds or texture packs that your minecraft is soo slow! Sorry but I cannot help you, for I have a Mac =P