You also want to install the image resizer plugin from the market place (free), to resize image sizes (If you want to offer a high quality texture version for later time, i suggest to do this after release). MOST assets use higher default resolutions and can be resized down without issue of loosing too much quality. Weapon textures usually require just 512 res, character meshes are just fine with 1024, same for most other assets, unless it is a terrain texture, which should be at least 2048. Walls should be often 2048 res too. If you use resizer, you have to manually set normal maps to normal group, after resize operation.
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