Originally Posted by
jokhul
For the sake of being technical, checking to see if you have a tool to use when executing a recipe, requires a database read. Modifying the tool condition after the crafting transaction requires an additional database update (which is not happening if durability is not currently being tracked).
Reading info is a good deal faster than writing it, so switching on item decay will definitely increase the database load, which MIGHT create noticeable lag. Don't forget that decay is intended to affect ALL items, so tools, weapons, armour and even baskets all have to have their decay recorded.