Sometimes cooking requires a little patience. It may be faster to fill your pan to the brim with ingredients, but doing that can actually slow cooking and give you a big pile of mush at the end. If you want to sauté, filling your pan too full will cause your food to steam and not give you the crispy results you are looking for. The same goes for cooking meat. Shoving too much meat in the pan lowers the temperature of the pan too quickly, which can cause sticking and a whole host of other problems. Your best bet is to cook in batches. The extra time you put into it will make your meal much better.