\$\begingroup\$

The Editor version and WebGL version of my Minesweeper clone have some graphics quality differences. I chose 'Fast' option when building this deployment.

Is this the difference between 'Fast' and 'Fastest' options of Optimization Level in Build Settings, meaning that if I choose the 'Fastest' option, the WebGL deployment will be the same as Editor version, unlike below? If not, why this happens?