4G iPod touch KEEPS CRASHING AFTER 6.1.3 UPDATE

Okay, so I live in an area with rural internet. Because of this I have only just downloaded the 6.1.3 iOS update this week for my 4G iPod touch. I have only just discovered how bad an idea that was.

Safari crashes every half-minute, the iPod is now INCREDIBLY slow, Twitter, YouTube and almost every app I have keeps crashing after a minute or so...

I have gone over all the 'fixes' that google has presented to me.

Clearing the multitasking bar doesn't change jack and I can't roll back my iPod to the backup on iTunes because I just got a new computer. And the first thing I did was move all my music over and SYNC THE IPOD AFTER IT HAD BEEN UPDATED.

So what am I supposed to do? My iPod is USELESS to me now as an internet-capable device OR music player, and no matter where I look the only help anyone can offer is "Apple doesn't support downgrading"???

So Apple updates the OS with a faulty patch and I have to deal with the failure?

Is there anyone who can actually HELP me? What do I do? Jailbreak the **** thing? I've never jailbroken anything before, but surely it can't render my iPod any more useless than it already is! It's not like the thing is covered under warranty anymore! (Really convinient, that...)

Can some please help me get my iPod WORKING again?! I paid $300 dollars for a music player with internet access, not a paperweight!

Either way, I'm officially done with Apple devices after this nonsense. I hear Galaxy Tabs actually work! Imagine!