Ok I tried many things,
Low or high buildings details no effect.
Antialiasing high x8 or off no effect.
If you play in 1600*1080 on my system the fps start show is scramble and unreadable.
With my system 1920x1200 or less make no change to micro stutter.
Is this due to my system or other people do have the same results?
It is a great game/simulation event with the little problems.