Wierd problems with graphics

[apeguy]

Okay, so since I reinstalled windows onto my computer, SC4's been showing some wierd problems in terms of graphics.







So as you can see from the first pic, when I drag networks out, the "preview" doesn't appear unless I zoom in or out, and in the second and third pics, if I rotate a building around, the preview seems to blocked by the preview of the same model but on a different angle, before it was rotated. I know these problems are pretty minor, but they are quite annoying. I'm using Windows Vista, I have an NVidia GeForce Graphics card, and I'm playing the game on a 1680x1050 widescreen resolution. From what I've read, I'll probably have to alter some of the settings on my graphics card for SC4, but I have no idea what to change. Any help would be greatly appreciated.

[vortext]

I had my fair share of graphic weirdness and got it fixed by changing the settings on the NVidia card indeed. No idea as to why but this works for me. My suggestion would be to do some trail-and-error yourself untill it's fixed as well. 

[apeguy]

Sorry for the late reply. I tried testing the graphics card using the exact same settings as in the link, it didn't work, so I guess I'll just have to alter settings to find the problem. While I understand that trial-and-error is the best way, are their some settings that are known to make a difference to SC4's graphics that I could tweak, just to help speed up the process?