Lo-Fi Games

If you get a back pack (or in my case a backpack full of backpacks full of building material) you can fill them up with items. Afterwords, you can open your inventory while the character is moving, and "pick up" the item via the mouse click. Your character will then run as if unencumbered. My main character had 16,500 (the maximum as far as i could figure it out) encumbrance. However, could run and fight as if he was not holding anything in his inventory when using the above method.

*warning. this method requires a lot of babysitting a single unit AND has crashed my game a few times.*