The Rendering Mode settings tells Unity how the glyphs will be smoothed. The possible options are Smooth, Hinted Smooth, Raster, and OS Default.
The Smooth rendering mode is the fastest rendering mode. It uses anti-aliased rendering, which means it will smooth out jagged, pixelated edges. The Hinted Smooth rendering mode will also smooth out edges, but it will the "hints" contained within the font's data files to determine how to fill in those jagged edges. This is a slower rendering mode than Smooth, but will likely look more crisp and be easier to read than Smooth. The Hinted Raster rendering mode does not provide anti-aliasing and instead provides aliased or jagged edges. This is the most crisp and the quickest of the rendering ...
