Yeah. Well, once you get to 100 colonies with a power graph that's already twice as high as the nearest AI and still exponentially increasing, it's hard to micromanage to the end. Especially if you're pretty sure you've already won. I like playing on the larger map sizes.
I haven't even had an actual SPACE battle yet because in all of my games so far I've effectively won before I even get to that point (Benevolence level III with Colonizer and the Constructor ship trick, combined with Thalan Hives and Hyperion Matrix and the Gaia Vortex +4 production for ALL colonies wonder).
Like if I get into a situation where I can tech anything in 1 turn, and still outproduce the AI, I reckon I've won.