Hi guys!
I have tried SOASE sometime ago, and that time as now, i have the same problem! STUTTER! Yes i see my game not smooth as almost the game i have ( a similar mmorpg is eve online, very very smooth game).
So i have installed latest beta patch and it's the same...
You say.. operating system? Yes i have Vista 64 bit home premium BUT i have windows xp with sp3 on my second hard drive, and so i'm installing it on xp (but i saw the same problem)
Maybe i can fix it trought nvidia control panel? Maybe are dx 10 with vista? but so.. the same problem on xp! Why?
My system is :
Q 6600 intel
Msi p6n platinum (nvidia 650 sli with latest driver for chipset in xp and vista)
Geforce 8800 gtx (768 Mb ram)
4 gb ram corsair
2 hd (500 Gb and 200 gb Sata II)
Someone can help me? maybe fix the nvidia driver...
Thanks in advance and sorry for my english
Update after SOASE is under windows xp :
The game is smooth... i can say very smooth... but i would fix the issue under windows vista 64 bit sp1..
Someone know how i can solve? Please stay away who say "remove vista" 
Vista is a good op syst.. i'm in trouble only with this game