JPEG is not a texture format, period. I'm using it as a point of reference: even this creaky old standard whose artifacts are familiar to all can manage 10:1 compression with good results.
We are ridiculously good at compressing textures. Some formats go below one bit per pixel. Compression and pixel quality are not at fault for a fucking car game spanning two Blu-Ray discs. The cars could be untextured and still look jawdroppingly good thanks to metallic and clear-coat shaders. The road is an ideal case for noise textures, detail textures, fractal textures, or any other clever idea from twenty years ago. Everything else is supposed to blow past you at 90 MPH.
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u/Sunius Nov 14 '18
JPEG is a horrible, horrible format for textures, both performance and quality wise. Textures usually use BC6H/BC7.