Apologies for not having time to review the whole thread in case my Q is answered above, but do the devs want us to submit crash dumps via email (or some other means) to help with the shakedown for 1.1?
As has been my GalCiv tradition, the rig I'm starting to play on is barely there sysreqs-wise. I got some stable play out of 1.03 by restarting Win 8.1 and letting GC3 have as much of the machine as it could grab after all the teeming resource piglets got running in the background. My lay impression is that it likes first crack at the virtual memory and sort of warms up for a stretch, then hums along nicely as long as I don't try to run anything else or start a new game.
So when I tried out 1.1, I followed the same protocol for a while, and things seemed a bit perkier. This led me to rashly try firing up 1.1 after I'd started and closed several different things, including Legendary Heroes. I got a new game going, played nearly a hundred turns on an Immense map with 7 other majors, and then remembered I'd forgotten to switch from No Tech Trading to No Brokering.
I backed out to the main menu, started a new game with only that Tech Brokering setting changed, and performance started getting stuttery after only a few tens of turns. Thought I should close the game and try again after a system restart, but as I was waiting for the game to put itself away it spit out a crash dump.
p.s. Not at all to my surprise, when given the mild coddling of being the first post-boot program started manually and allowed to settle into virtual memory, GC3 runs beautifully on my crappy little computer. I've ordered a humble 'real gamer' rig for the first time in my life in anticipation of getting to play below the strategic map and watch all the pretty stuff!