Source: the Koei livestream about 2 hours ago. Time mark: 37:30-41:16.
In case you need English Subtitle version: https://www.youtube.com/watch?v=Vx4CmK3DT94
Gameplay capped at 30fps.
There're 2 significant lags during the battle, but otherwise things seems pretty smooth and Koei didn't sacrifice the enemies' numbers.
Need more people testing it, but it seems it's serviceable enough for me to buy it.
by Beowolf_0