here is the Process Monitor output from clicking the plus next to the exact same filder in XY. Only 13 events, as opposed to 140 in Opus. Actual directory/file names have been masked for privacy.

575 12:37:19.7327451 AM XYplorer.exe 4132 FileSystemControl \192.168.1.45\IPC$ DFS UNAVAILABLE Control: 0x60194

576 12:37:19.7329856 AM XYplorer.exe 4132 FileSystemControl \192.168.1.45\IPC$ SUCCESS Control: FSCTL_NETWORK_DELETE_CONNECTION

577 12:37:19.7332295 AM XYplorer.exe 4132 CloseFile \192.168.1.45\IPC$ SUCCESS

579 12:37:19.7384427 AM XYplorer.exe 4132 CreateFile \192.168.1.45\a\thebeast\databases SUCCESS Desired Access: Read Data/List Directory, Synchronize, Disposition: somedir, Options: somedir, Synchronous IO Non-Alert, Attributes: n/a, ShareMode: somedir, Write, Delete, AllocationSize: n/a, OpenResult: Opened

580 12:37:19.7415635 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases* SUCCESS Filter: *, 1: .

581 12:37:19.9360466 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases SUCCESS 0: .., 1: somedir, 2: somedir, 3: somedir, 4: somedir, 5: somedir, 6: somedir, 7: somedir, 8: somedir, 9: somedir, 10: somedir, 11: somedir, 12: somedir, 13: somedir, 14: somedir, 15: somedir, 16: somedir, 17: somedir, 18: somedir, 19: somedir, 20: somedir, 21: somedir, 22: somedir, 23: somedir, 24: somedir, 25: somedir, 26: somedir, 27: somedir, 28: somedir, 29: somedir, 30: somedir, 31: somedir, 32: somedir, 33: somedir, 34: somedir, 35: somedir, 36: somedir, 37: somedir

1219 12:37:19.9755774 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases SUCCESS 0: somedir, 1: somedir, 2: somedir, 3: somedir, 4: somedir, 5: somedir, 6: somedir, 7: somedir, 8: somedir, 9: somedir, 10: somedir, 11: somedir, 12: somedir, 13: somedir, 14: somedir, 15: somedir, 16: somedir, 17: somedir, 18: somedir, 19: somedir, 20: somedir, 21: somedir, 22: somedir, 23: somedir, 24: somedir, 25: somedir, 26: somedir, 27: somedir, 28: somedir, 29: somedir, 30: somefile 31: somefile 32: somefile 33: somedir, 34: somedir, 35: somedir, 36: somedir

1876 12:37:20.0035320 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases SUCCESS 0: somedir, 1: somedir, 2: somedir, 3: somedir, 4: somedir, 5: somedir, 6: somedir, 7: somedir, 8: somedir, 9: somedir, 10: somedir, 11: somedir, 12: somedir, 13: somedir, 14: somedir, 15: somedir, 16: somedir, 17: somedir, 18: somedir, 19: somedir, 20: somedir, 21: somedir, 22: somedir, 23: somedir, 24: somedir, 25: somedir, 26: somedir, 27: somedir, 28: somefile, 29: somefile, 30: somedir, 31: somedir, 32: somedir, 33: somedir, 34: somefile, 35: somedir, 36: somedir

2455 12:37:20.0312814 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases SUCCESS 0: somedir, 1: somedir, 2: somedir, 3: somedir, 4: somedir, 5: somedir, 6: somedir, 7: somedir, 8: somedir, 9: somedir, 10: somedir, 11: somedir, 12: somedir, 13: somedir, 14: somedir, 15: somedir, 16: somedir, 17: somedir, 18: somedir, 19: somedir, 20: somedir, 21: somedir, 22: somedir, 23: somedir, 24: somefile, 25: somefile, 26: somefile, 27: somefile, 28: somedir, 29: somedir, 30: somedir, 31: somedir, 32: somedir, 33: somedir, 34: somedir, 35: somedir, 36: somedir

3017 12:37:20.0544307 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases SUCCESS 0: somedir, 1: somedir, 2: somedir, 3: somedir, 4: somedir

3103 12:37:20.0580007 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases SUCCESS 0: somedir, 1: somedir, 2: somedir, 3: somedir, 4: somedir, 5: somedir, 6: somedir, 7: somedir, 8: somedir, 9: somedir, 10: somedir, 11: somedir, 12: somedir, 13: somedir, 14: somedir, 15: somedir

3376 12:37:20.0707635 AM XYplorer.exe 4132 QueryDirectory \192.168.1.45\a\thebeast\databases NO MORE FILES

3377 12:37:20.0709562 AM XYplorer.exe 4132 CloseFile \192.168.1.45\a\thebeast\databases SUCCESS