Root cause analysis of simultaneous tag subscription storms, alarm burst processing, and report generation conflicts during operator shift handover on GE HMI Proficy iFIX and Honeywell Experion PKS systems.
Shift-change SCADA slowdowns in Honeywell Experion PKS are a load management problem, not hardware failure. Six operators logging in simultaneously spike server CPU to 85–95% for four minutes, dropping tag scan rates from 500 ms to 2,000 ms. This guide identifies the root causes and delivers specific configuration fixes — including staggered login scheduling, report task offloading, and alarm database tuning — to restore full performance during the critical handover window.
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