I have recently spent many hours to rework all my graphics settings for all sims as I tried tips of YouTube videos to optimize the default Windows 10 NVIDIA graphics settings. And it really made a difference for all sims. So I have deleted all my NVIDIA profiles and started from scratch again.
Here are my latest (high resoltuion "hardcore") settings for GPL for my NVIDIA GeForce 970 GTX, driver version 398.82 (08/01/2018).
I use NVIDIA Profile Inspector to set my graphics for all games.
In order to use the NVIDIA Profile Inspector with GPL you have to create a profile for each GPL mod.exe, e.g. for the 65 mod (gplc65.exe).
At GEM+ I set the LOD Bias to -50. Higher values make objects look flickering and blurry in the distance on my system.
And in NVIDIA Profile Inspector you should set "Texture filtering - Negative LOD Bias" to "Allow".
If you use any 60 FPS patch for GPL tick "Enable VSync" in GEM+. Untick it if you run GPL in default 36 FPS.
On a side note.
If you struggle to activate Antialiasing (AA) on Windows 10 after the Windows Anniversary Update for the games GT Legends and Automobilista you need to set in NVIDIA Profile Inspector the Antialiasing compatibility to "Diablo III". This might also work for other (race) games. If you don`t set it this way you can try whatever you want, you will not get AA to work.
Edit: For lower resolution "softcore" settings for NVIDIA Profile Inspector and more infos on seting up GPL have a look here:
Edited by Stefan Roess, Oct 17 2018 - 09:33 AM.