Are you being serious? Sorry but lag is a huge huge problem when your save file gets above a certain point. I think it's 8 or 9 mb. Once it starts lagging it does not stop an only gets worse. There is no help. There is supposed to be an update this month that they say will help with the lag. Until then you need to turn off all auto saves in the menu. Clean out all your skyrim saves in the save data folder, except of course for your newest ones.
I can't believe you haven't ever heard of the lag. Just beware I started lagging and next thing you know I was restoring my ps3 every week due to system crashes. It's a pain but I still play.
Also keep your quest log down and stay out of the big cities unless you absolutely have to go there. Good luck and hopefully the next patch will fix it all.