Yeah, my system is 3 years old and wasn't built with top-of-the-line parts when it was

But it plays games that have legitimate reasons to be far more graphic/cpu-users-hogs than Civ5 does just fine... I guess that's the beef :-/
Anyway, CiV - is for some reason... beastly. Particularly CPU-demanding.
This is what gets me. There is NOTHING to justify it being so beastly other than poor/sloppy programming. Maybe the multi-layered tiles, maybe? There might be, zoomed out, 25 cycling animations on the screen (depending on how many resources there are on the screen and active workers). But there really is nothing graphically in Civ5 that even begins to justify it's need for resources (resulting in a signficant slow-down later on in the game). Nor for the CPU taking longer to process it's turns despite the fact later in the game the CPU actually has far fewer cities/units under it's command...
Bad news at the end: There's virtually nothing recommendable that will enhance your CiV performance (overclocking might very slightly, but I don't recommend that).
That's what I was afraid of. Oh well. I guess I was hoping for something like SkyBoost for Skyrim which optimizes CPU usage by the game. And regardless of the (often) flat plants in Skyrim, with full HD packs and maxed LOD, it may not be a top end intensive graphics game, but it's a hella of a lot more involved than 5 workers chopping away at forests.
Ultimately, I guess it's time to say goodbye to Civ as a first launch purchase and wait for it to go on sale for $10 a year later.
Thanks for the news. At least now I know there is nothing. lol
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Vanilla textures in Skyrim are dependent, but usually 512x512. Most of the HD packs (and I have the Bethesda pack as a base with user-mods on top) are typically 2048x2048 or 4096x4096. Not much has been done about the cardboard cutouts of a lot of the plant life, but it does make it what, 16 times (?) more intensive. And then the blowing leaves and 15 butterflies...
