Some clients have datasets of 200,000 locations, none of which include latitude/longitude coordinates, only U.S. street addresses. Often customers want to know import limitations including Google’s limit. As of June 11, 2018 those geocoding limits will change. You should determine how to import, whether to break the list into smaller chunks or switch to the MYSLP SaaS managed service.
In order to perform bulk location imports with a CSV file for the WPSLP plugin you will need the Power add-on installed. MySLP users will need the Power level plan or higher. The following constraints can keep the locations from loading completely or cause slower processing.