Qlik Sense Search folders

[Anonymous]

Questions:

1. What is the function of these sub-folders in the Search folder?
2. Is Qlik Sense automatically cleaning this folder? e.g. deleting all these entries.
3. Our concern is with the size this Search folder will reach? for a single developer playing around with Qlik Sense it reached 505 Mb and counting.
4. Are these sub-folders in the Search folder slowing down opening Qlik Sense desktop?
5. Is it safe to delete these folders or delete the files they contain?