I have all AA turned off for reason 1. It helps. I noticed as soon as I went from a fairly hoopty monitor to a 1080p monitor I had a very difficult time seeing dots beyond icon range relative how I could before, so totally agree with 2(kind of a no-brainer actually).
Since then I'd add a possible 3rd factor, and I sure this is by design, the haze setting in the arena. Regardless of how poorly I might be able to pick out dots at range generally in the main arena, it seems that on certain terrains or certain setups I'm able to see long range dots much better than on others. I see this all the time in FSO where the terrains and haze setting or time of day will change from frame to frame. Some frames I'm able to pick out dots way out and others hardly at all until the (short range) icon pops.
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