I found that using msaa (2x) instead of AA, or at least AA around 4x and PD between 1,5 and 1,8 works best for me. Higher PD smudges out distant objects and looks good in cockpit but it's then harder to spot targets. Msaa uses tons of system resources but is a better option for eliminating jagged lines and better gauge readability.
I run Intel i5 6600k, 16gig ram, m.2 ssd disk, msi 1080 gtx. Gets a solid 35-90 fps on multiplayer servers both huge and small missions. Experimentation is best here since it's very system dependable.
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