Vraciu, as I told in game, it can take 48 hours or even more for downloading the updates.
First, uncheck the "give me recommended updates the same way I receive important updates" to reduce the amount of updates.
Second, check your power management settings in Control Panel. Set them to maximum performance and check that it never goes to sleep if plugged into mains.
Third, let it run until you get all of the updates. Preferably when you're away so you won't feel like playing AH...