It has been found that on certain configurations, games designed with the UE4 engine (ATV, Moto Racer 4) can blink pink or green.
This problem is known on UE4 games, notably Fortnite or on Geforce and Steam forums.
To solve this problem just :
Right click on the desktop => Control Panel Nvidia
Click on "Change resolution"
Select "Use NVIDIA Color Settings" (instead of using the default color settings).
The problem is thus solved.