I get similar issues when using your tileset, particularly around the buildings, but just assumed at the time you'd been using giant textures or something. Try checking your model file sizes. If they regularly stretch above 1mb then you may have unwelded tverts (a bane upon modelling). My catacombs tileset included a 50mb tile I forgot to weld tverts on, which totally screwed up the game.
To fix such an error apply a UVW Unwrap to every mesh in every model, select all the tverts, go to Tools -> Weld and then collapse the Unwrap modifier. It can take time but is a very important step in streamlining both model filesizes and render efficiency.
CM3 can do these minor fixes automatically, but if you try and feed large files into CM3, you'll tend to just crash it (it took a total of 72 hours to process one really inefficient model of mine before I got into the habit of cleaning up by hand as I go).
That said, your issue could also lie elsewhere entirely. Another likely candidate is the number of textures being rendered - actually, using just a few giant textures will be more efficient than the same number of pixels split into separate smaller textures.
Modifié par _six, 02 février 2011 - 05:55 .