Website Looses Style
If you face issues with the layouts not looking like the settings you set in the Divi Builder, the problem could be with the Divi Builder Cache.
Sometimes, the Divi Cache is temperamental.
Try disabling static css file generation. Divi > Theme Options > Builder > Advance.
It will stop Divi from caching the CSS it generates, therefore showing the correct CSS
Yes and no. To be honest, it will be minimal, but you can use a caching plugin like "WP Fastest Cache" once the site is ready and this will do the job well.