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Just out of curiosity does anyone or at least have a recommended average size for textures files used within a scene? Especially if you have a substantial amount of textured objects.
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It depends on how close objects are to the camera. Objects in the foreground occupies more space within the frame, so they need a higher resolution texture then objects who only occupy a few pixels in the background. As a rule of thumb, personally, I work with textures sizes between 256x256 to 1024x1024 during my production runs, but most textures are created at 2048x2048 and downgraded before they are placed in the final scene.
Also, to be as memory efficient as possible, always try to work in dimensions that are power of 2 such as 256, 512, 1024, 2048, and 4096.
-Avotas
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