TL;DR
MEASURE TEXTURE VRAM USAGE AND DOWNLOAD SIZE using lox9973's Assetbundle Stat tool and Thry's VRAM estimator.
Reduce Resolution in the texture import settings! Not every texture needs to be 2k or 4k.
Don't disable mipmaps - Your materials will look and run better with them on!
Crunch doesn't change VRAM usage but can reduce download size. Not a magic bullet!
For Normal Maps, Use RG Compressed BC5 (From Platform overrides menu1). Normal Quality (DXT5nm) and High Quality (BC7) use the same VRAM but look worse.
For textures with Alpha, Use High Quality (BC7). Normal Quality (DXT5) uses the same VRAM but looks worse.
Don't use JPG (or other lossy formats) to store your source textures! Lower quality, with no benefit to VRAM/Download Size
https://www.poiyomi.com/blog/2022-10-17-texture-optimization
#optimization #vram
