If Larian reads this: Please find a way for us european customers. 7pm on a thursday is hell. Looking at what could be 2h of download becoming 3-4 hours is more than likely and the game isn't even technically installed then.
I think you should be complaining to Steam ...
Steam wouldn't explain anything like that to a customer, but maybe if a publisher asked if that was an option, they'd tell them. At least it's much more likely Steam would even answer that question, if Larian asked comparing to if I did it.