Sure it does a lot of damage, but why when just stabbing while charging does enough to kill as well. On top of that, the hit window for a couched lance is tiny and harder to aim, as well as having to be charging directly at the person you want to hit, rather than at enough distance that you can safely stab and avoid a reprisal hit. The fact that you have to charge at the person means that they have a good chance of stopping you in your tracks as well.
I think the main problems with couching right now are that the lances that can be couched are too short for it to be effective. The Vlandian Heavy Lance is 197 length, which sounds decent but when you actually look at it while couched, it barely sticks out past the horses head, meaning you basically have to be on top of a person to hit them. you get more reach when you stab your lance.
I definitely remember Couching being more usable and useful in Warband.
TLDR: Couch-able lances need to be longer and the hitbox window needs to be more forgiving, or easier to aim.
I think the main problems with couching right now are that the lances that can be couched are too short for it to be effective. The Vlandian Heavy Lance is 197 length, which sounds decent but when you actually look at it while couched, it barely sticks out past the horses head, meaning you basically have to be on top of a person to hit them. you get more reach when you stab your lance.
I definitely remember Couching being more usable and useful in Warband.
TLDR: Couch-able lances need to be longer and the hitbox window needs to be more forgiving, or easier to aim.