Solution : https://service.sap.com/sap/support/notes/1073521 (SAP Service marketplace login required)
Key words :
transaction/program/screen/function code, unreasonably high response time due, sap earlywatch alert reports, unreasonably high response times, sap gui response times, dialog response times correctly, high gui time, sap front end, external program calls, system response times
Related Notes :
1240274 | STGTC - short dump ITAB_ILLEGAL_SORT_ORDER |
376148 | Response times without GUI time |