Wait just a motherfucking minute.
There is no indication of the weight of items whenever you're looting something. The game doesn't even bother to pop up your total weight when the loot window is open. This means that whenever you are over encumbrance, you need to stop, open your inventory, look through your items (God hopes Bethesda put in inventory sorting of some kind), and drop whatever random shit you happened to pick up.
What's the point of this in a game where you loot 95% of everything around you? If Witcher 3's inventory was bad, this will be a disaster.