A free mod for Witcher 3, by Sergeanur.
This is a simple improvement to the GUI of the stash menu to make it faster and to make it more useful. It was originally created for the game, but you can use it in any game that supports the GUI. The main idea of the improvement is to only update the items you add or remove. This means that if you have a lot of items in your stash, you will not have to wait for a few seconds when you add or remove items.
If you use a lot of items in your stash, this mod will help you to manage your inventory and to use the stash menu more effectively.