Optimizing the Database
Linotype FontExplorer X uses an internal database to store all information about the installed fonts on your computer. After working with Linotype FontExplorer X for a longer period, this database can contain data records that are no longer required. This may cause Linotype FontExplorer X to take longer to start. Therefore, it is recommended to remove unnecessary database entries once in a while.
Choose Tools > Optimize database.
Alternatively, you can also hold the option (⌥) key while starting Linotype FontExplorer X.