This tip slightly increases the speed of the game. The U.I. menus during training, 3d animations and movement during battles, skipping etc. Movies and things with spoken dialogue are not affected.

Useful when replaying the game for the nth time to get all Achievements

Download and install the program Cheat Engine

https://www.cheatengine.org/

Run cheat engine
Run the game.
ALT TAB out to cheat engine
Click the left most button on the upper left, the one that looks like an old style PC with a magnifying glass in front
Select the game from the list
On the right middle of the window you will see a checkbox called enable speedhack
Check on it
Use the slider to change the speed