Solution : https://service.sap.com/sap/support/notes/1270795 (SAP Service marketplace login required)
Key words :
reading document flow networks, document flow requires, document flow layer, document flow read, mass reading links, terms ors links, required read direction, class cl_binary_relation performed, transparent tables assigned, significant performance improvements
Related Notes :
1282201 | EWM - Document Flow: recommended corrections |
1240377 | Preventing superfluous mass selection of relationships |