In a game where you spend 20 or 30 minutes thinking what to do, waiting 3 or 4 minutes to process turns gives you time to go and pour another glass of port or brandy. These AGEOD games are to be savored, not rushed.
Here's how the master himself, Napoleon played the game: from Chapter 6 of Jomini's "The Art Of War":
"The emperor was his own chief staff officer. Provided with a pair of dividers opened to a distance by the scale of from seventeen to twenty miles (which made from twenty-two to twenty-five miles, taking into account the windings of the roads,) bending over and at sometimes stretched at full length upon his map, where the positions of his corps and the supposed positions of the enemy were marked by pins of different colors, he was able to give orders for extensive movements with a certainty and precision which were astonishing."
Alternatively, try Campaigns on the Danube, another Matrix Napoleonic game which has just received a new patch.