Files can be stored in the file system (faster) or in database. If you're experiencing problems with slow image viewing, please try to configure the following values in the Site Manager -> Settings -> System -> Files section:

 

•Store files in file system: yes

•Generate thumbnails: yes

 

Enabling the Redirect files to disk setting in the Settings -> System -> Performance section could also be helpful.

 

You can find more details on file management in the Where the files are stored topic.