This alters the NPT_Override setting in gpl_ai.ini. A value of zero sets the AI to Papy's default behavior which is to adjust speed depending on your laptimes. By default GEM+ keeps a separate NPT value for each player and Carset but you can change this in the configuration window.
The default value for this is 0. With it set thus, GPL automatically adjusts the AI speed depending on your past performance. It aims to keep you finishing somewhere around 5th or 6th.
It doesn’t always work well though and most people prefer to set it manually.
A setting of 1 puts the AI to their natural speed. Anything less than 1 speeds them up, anything higher slows them down.
The driver.ini is for adjusting each AI drivers attributes indivually and is a big topic. There's a tutorial at http://home.online.n...g/track_ini.htm for adjusting the track.ini which changes the overall AI speeds.