I made a lot of tests and sometimes changed several parameters (not a scientific approach):
- I displayed the FPS and noticed both computers displays at 60 Hz
- I fixed the max FPS at 60 Hz using the nvidia control software,
- I tried several technoparrots versions between 865 and 1091,
- I changed the network parameters (DNS and broadcast IP),
- I made a fresh install of technoparrot.
In the end I kept the latest TP version, the closest network parameters as possible to the default one, and the 60Hz max FPS.
After all this I still have a difference between 5 to 10 meters during the race. It is better but noticeable especially during overtaking.
By comparison, there is no issue at all with Initial D Arcade Stage Zero 2.3: Syncro is perfect.