And still I'll explain it, which may help to find a solution. This has been already explained multiple times on forum, but here it goes.  RAM is taken by database files. Database keeps record of each entry in the sync share - currently present files and the ones that have ever been in the share. Entry - is the file itself, and also each subdir level in its path. Each entry takes up around 2KB of RAM. The bigger folder tree you have, the more nested folders, the more file changes/deletions, the