Prebuild speed depends on your server resources, complexity of your site (themes/plugins), enabled features (Merge styles, Merge scripts, etc).

In order to speed up prebuild you can do the following:

  • Enable Compute API
  • Enable Prebuild Booster
  • Set Prebuild to Unlimited or Moderate

Please note, that the first few pages can be slower, also the first time of prebuilding cache can be slower.