Quote Originally Posted by TinCow
If your problem is simply that you kill the enemy too fast with lots of cavalry, might I suggest using less cavalry? That might not be the ideal fix to your problem, but all that matters is that you enjoy the game... so just stop using them if that helps.
Nice try, but it isn't just me, the AI has the same issue. When I used infantry I got whipped by cav the same way (even worse on "very hard.") I started out using an historical mix of units. What I found was that the infantry was useless. They couldn't hold in melee while things happened on the flanks. There is no real battle line being formed. Battles devolve in just a few seconds to a mess where the AI has the advantage of issuing orders to everyone simultaneously as often as it likes.

The AI likes to do lots of bizarre crossing patterns as the units close and this disorders the line.