Question about PIC VNAV decents - the MSFS Drag bug

Hi,I know that MSFS2002 is notorious about not modeling correct aerodynamic drag effects at high altitudes. For this reason of course, the PIC .air file can not accurately simulate a realistic idle decent from cruise altitude. To compensate for the MSFS drag bug, PIC must keep the throttles pushed up to around 70 percent N1 throughout the course of a normal 3 degree VNAV engaged decent.On the VNAV DECENT page of the PIC FMS, a speed profile indicates a .80 mach decent until reaching an IAS of around 320 kts or so, depending on cost index. I've noticed that a VNAV commanded decent with PIC will however immediately try to capture and maintain the profile decent IAS right away, ignoring mach number. In real world operations I assume that profile decents do maintain a mach value until intercepting a profile IAS, sort of the climb profile in reverse so to speak?Thank you for any insight - not trying to nitpick here (I love this program), just trying to broaden my understanding a little.