Hello,
I've seen alot of complaints about how the game runs when it's zoomed in below the cloth map but i've not seen one about poor performance ON the cloth map. Infact i think i heard one of you say in the video tutorials that you had to code in a frame limiter just to stop the frame rate from going stupidly high and stressing the system more than it needed to.
Here's a screenshot with an FPS overlay:

So yeah, 9 FPS on the cloth map.
System Specs:
OS: Windows 7 x64
Processor : AMD Phenom II 965 Black Edition x4 3.4Ghz
RAM: 4GB 1333Mhz DDR3
Video Card: Asus ATI Radeon 5870 1024MB
Not sure what else is relevant really.
Also i'm still expriencing the out of memory crash after about 250 turns. It's been aleviated a little since the last patch, before it would crash just under 200.
I think we can agree that my computer should be more than upto the task of rendering the cloth map at a decent frame rate atleast. Considering you designed it for low end PCs and notebooks.
link to my debur.err file on pastebin
link to a few crash dumps from yesterday