The daoest by default has a large gap in attachment size evaluation between 64k and 1 MB. You may wish to understand the value of setting the object size between these parameters
Set the Notes.ini parameter DAOSEST_BUCKETS to customize the size shown in the report.
The above line sets to 16K, 64K, 128K, 256K, 512K, 768K, 1MB, 2MB, 3MB and 4MB.
It can be set to any set of 10 values in kilobytes.
Source: Lotus Software KnowledgeBase #1418102