I have this problem as well..
Just got the game.. played it 4 times.. or tried rather.
I7 950 quad core 3.07
12 gig of Ram
2 gig vid card (Zotac Geforce GTX 580)
all the latest drivers
The system is able to play Crisis2 in full render without issues or lag.
When playing Star Ruler the computer runs at about 18% of its capability. and yet.. when I prep for a large battle and send off 1000 or so ships.. it crashes before or during engagement.. on all 4 times I played.. all new game start over with settings turned down to max the performance resourses..
I have tried the above recomendation for 2 of the new game starts.. but the issue remains..
can we expect a 22.214.171.124 anytime soon that resolves this?
*Game shelved till repaired.*
Thank You for your time.