Hello. I have a similar issue, with a new laptop (Dell Latitude E6350). I can hear the fan running and it feels hotter than I think it should. CoreTemp tells me the cores are all at around 70C. In ProcessExplorer, Interrupts is sitting at 9.4%. I followed the instructions and captured an .etl trace file. Windows Performance Analyzer shows it's caused by ACPI.sys with ACPIInterruptDispatchEventDpc and ACPIInterruptServiceRoutineDPC. Any suggestions appreciated.