Hi Alex,
the main variables for the spotting are:
- Resolution
- Antialiasing
Reduce these parameters and you will get a better spotting, but a worse graphic quality and consequently it will be more difficult to distinguish the various types of aircraft.
These settings are very different from one computer to another, so you have to find your personal balance.
- Gamma
In some case a lower gamma can help you, but even here it varies depending on the in game light (time of day, weather). In any case it is possible to modify this parameter even while in the cockpit, so I adjust it as soon as I spawn (usually I keep a value between 0.6 and 0.