So, finally found out how you are meant to spot targets when there are no labels, if you are running a high resolution:
[li]Go to Settings
[/li][li]Go to ‘Gameplay’ tab
[/li][li]Set to ‘Large’
This helps aircraft and ground targets to show up at a reasonable distance so you can actually find targets. I’ve had it set to off until this evening. Now I can spot things flying around. It doesn’t do anything once they are up close and personal, it just allows you to spot the dots.