Hi,
All I can say from the logs is the job that each deletion takes 17 seconds:
I0430 12:41:44.820654 JOBS-WORKER-3 FilesystemStorage.cpp:266] Deleting attachment "1fcb1ce7-00c6-4941-af21-b7756e433069" of type 1
I0430 12:42:01.580050 JOBS-WORKER-3 FilesystemStorage.cpp:266] Deleting attachment "65ca2323-334f-4ddf-9df7-99cc98cf1fe9" of type 1
I0430 12:42:18.347267 JOBS-WORKER-3 FilesystemStorage.cpp:266] Deleting attachment "72b015d7-49f3-4cd3-a62e-c85d767fcbd6" of type 1
It might be related to this topic but I actually never got the final feedback from @csimon3 so the topic is on hold right now.
Best regards,
Alain.