For those who have multicore cpus and are not yet running GTL in all cores, I made a little app.

In version 2 few new features were introduced, from which Race Engineer Speech Engine is the one to mention. Which is something like Crew Chief, but smaller and more simplified.


Click for the screenshot...
Picture from version 1.0


Download link: https://drive.google.com/file/d/ 1oG2prA5hTeGgC9yIYQhjHci7VGq0lbyr


Readme below:

GTL Online Racer Tools 2.0
  ----------------------------
BACKGOUND:
This is small utility that allows changing GTL CPU affinity on the fly.

Originally GTL was not designed to run with multiple cores and by default,
game itself sets things up so that it will use only one core. Most likely the
design team tested game by running it with 2 cores and saw no difference. How
ever, many things have changed since 2005 and nowadays there's a quite big
difference in framerate if the game has been forced to use more than one
core. This can be due many things, but most likely DX9 rendering engine has
been optimized to multicore operations.

So far, changing affinity could been done after game starting by switching to
task manager, selecting the processes, selecting GTL process and right
clicking "change affinity" from quick menu. However, game itself forces to
single core in each start, so you have to do this every single time. Another
way of doing this would be installing third party process diagnostics tools,
which installs tons of other stuff. This I did not like so I did my own smaller
one.

FEATURES:
- Setting Affinity for GTL and automatic watcher which will keep the selected
 settings.
- Race info Window displaying race information: lap time, best lap
 time, fuel, fuel consumption per lap, position etc.
- OBS speed display. Optional window showing the speed in km/h. This can be
 overlayed in OBS for video streamers.
- Race Engineer Speech engine. You get major information from race info
 speeched as audio. So, no need watching fuel consumption in XD. This
 feature also supports using scroll lock as hot key enabling / disabling the
 speech.

INSTALLATION:
1. Extract files to your preferred location.
2. drag'n'drop AffinityLock.exe shortcut to your desktop. That's it.

USAGE:
- Start the program with shortcut you made in installation and keep it
 running until you end your GTL session.
- while GTL is not running use "Set Default Affinity" to setup up your
 Preferred Affinity settings for GTL. Tool will activate them as soon as
 GTL starts.
- while GTL is running, use "Edit" to edit your current Affinity settings.
- "Change Visibility" changes the tool view. Click to cycle different views.
- Click "Time" or "Laps" to change Race Progress view.
- Use Speech button or menu select speech settings. Use TEST mode to fine tune
 application volume from windows mixer so that speech volume fits in game.
- To enable Scroll Lock hot key, select option from Speech menu after you have
 find speech settings for you.
- OBS Speed Display can be enabled from the menu.
- When closing, program saves it's window location, speech settings and default
 affinity settings.

 
 6th of October, 2021
 Nappe1 signs off.

EDIT: screenshot changed to link not to break the forum layout.