Solution : https://service.sap.com/sap/support/notes/203617 (SAP Service marketplace login required)
Key words :
transaction su01 - tab 'fixed values', individual menu creation requires experience, terms easy access menu, customer-specific area menu, practically redundancy-free menu, transaction pfcg - tab 'authorizations', user-specific start menu, disproportionately large user menu, area menu created, call transaction sm30
Related Notes :
1365452 | Optimization of the report EASY_ACCESS_NUMBER_OF_NODES |
870026 | Menu entries are missing in compressed user menu |
380029 | FAQ| SAP Easy Access Customizing |
332126 | |
316395 | |
203924 | Performance 4.6 - collective note |