Quoting TheBirthdayParty,
Both the assault and sifter lines of ships are incredible!
Too kind. I'm eventually going to figure out what best free ware recorder to use and post them.
If you have an Nvidia card, Shadowplay might work. Otherwise you could try raptr GVR.
Shadowplay is insanely good for recording - it has less than a 2% FPS drop, but it's only for Nvidia cards, and if you have a laptop with daul graphics, can't record desktop, or, for some reason, GalCiv3 (but only on a laptop - desktops are fine)
GVR works quite well on AMD cards, ~9% FPS drop, but has ~31% drop on Nvidia cards.
For comparison, software based recording is much worse. FRAPS has >50% fps drop on both cards
Searching around brings https://obsproject.com/ up. Though it's mainly for streaming, apparently it can record videos too. As mentioned above, since it's software-based, it might cause lag and fps-drop.
You could also try RadeonPro.