Just saw Engine OS 3.1.1 and Desktop land with the following comments:
Some users have reported slow search speeds on Engine OS devices when searching for tracks. While large track counts on a drive can worsen the search speed, some users have found that running a Library Optimization on Engine DJ improves the search speed. To do this, connect the drive to a computer, open Engine DJ, click the gear icon, go to the library tab, and click the “Run Cleanup” button under system.
Curious to see how this changes things 
