I know is slightly older post, but in case helps someone else
This web page has much help http://pcgamingwiki....iki/Jade_Empire
on that page you will find
Increasing FPS
- Open JadeEmpire.ini in the installation folder
- Set clampFPS to 0 and save your changes.
Also is this command also in jadeEmpire.ini
RefreshRate=60 I think for PC is defaulted at 60, but if you do not set the "ClampFPS=0" to zero and leave it at one the FPS will be locked at 30.
[ Just a side note I have played through many times, so I use Cheat engine to test new Ideas ] I have found that setting ClampFPS to 0 can cause some hiccups with certain cheat engine tables, possibly this is something in the Lua scripted tables.