what you mean
The common sense thing to do if you've got sluggish code is to look for superfluous stuff to take out - but often it's the other way around and your code's whacked because you haven't taken the time to prepare things fully. Precaching fits into this category - you fly your camera around the level before letting your player loose and, VRAM willing, there won't be any pauses as things are fetched during play. You used to see the awful effect of not precaching on PC FPS games when you selected a weapon for the first time - quite a few of them would stutter and jump as the computer went "Cripes - I've got to display the Humung-O-Matic 5000 and I've just realised I've no idea what it looks like! Er, hang on while I check..."
But that's not the problem in your case evidently, so just file it neatly at the back of your mind.