Upvoted. I have that issue as well. Do you happen to have the same issue while zooming in through scopes or binos?

Yes I have the exact same problem!

Same here, I've upped my FOV to 90 and even payed with 100, send to slightly improve it, but still, too much fps drop and stuttering, but what's the chances this will get fixed? Voting up anyway

The only solution is lowering the graphics, though it's a bit disappointing having to turn them down, simply because 10-20% of the time you play arma, you use scopes/binoculars/driving through towns etc. I use a mix of high/very high/ultra settings (i5 4670k, gtx 660oc, 4gb 1333), and I have that issue. I know it's not the greatest rig, but it should manage to perform well in those settings (stutter-wise, not fps-wise).

Exact same issue, devs, please don't close the thread down. This needs to be fixed.

I've got a perfectly fine rig (Similar to the OP), Intel i7 2600k @ 3.4ghz, GTX 780 Superclocked, 500GB Samsung Evo SSD, 16GB Corsair Dominator Platnium RAM @ 2400Mhz

I get 70-100 fps in Altis singleplayer, fly low over Kavala and I get 30. The game really shouldn't be struggling like it is to load in objects like buildings.

I've noticed this as well when one increases the time acceleration (setacctime), either while the AI is driving or flying the pilot/driver will 'stutter' as OP puts it and return to normal when time acceleration is 1x or slower. I would assume this is related to one's system lag as V_Ninth and TOMMEH indicated.

@debug Out of curiosity, what specs do you have? Just so we can rule out hardware as a problem, and pin it down to the actual game.

amd fx-8350 8core 4ghz 8gb ram
amd radeon R9 200 series
win7 x64
game saved on SSD
not sure about ram speeds