http://www.sublimetext.com/forum is a better place for this, but as a stopgap yo...

jskinner on March 24, 2015 | parent | context | favorite | on: Sublime Text 3 Build 3080

http://www.sublimetext.com/forum is a better place for this, but as a stopgap you can disable file indexing via the index_files setting. You can also find out more about what indexing is taking place by entering sublime.log_indexing(True) in Sublime Text's console.