I have total stable 60 fps with i7 4790, 16gigs ram, gtx 980 @ 1450 with these settings:
grass: very high
extended shadow distance bar: 50%
extended distance scaling: 50%
high resolution shadows: off
MSAA: off
reflection msaa: 2x
Everything else Maxed.
If i switch off vsync i have 75-85 fps.
These are my online settings ( i usually do 1v1 deathmatches so i can't afford having a framedrop)
IF i play offline:
grass: very high
Msaa 2x
txaa on
reflection msaa 4x
everything else maxed.
I get around 45-65 fps.
grass: very high