I was struck with inspiration. The game needs optimization, so I gave it some. Inventory is now handled, internally, much differently than before. I have claimed 2 bonus hours for this madness, but it will make adding storage lockers much easier later too, so there you go.
Will it break things? Probably! Let us know, we'll fix it.
Will it make it faster? Should be faster immediately, especially where it manipulates your inventory(Checking it, dropping things, getting things, equipping and unequipping things), especially as you get more and more stuff.