(Possibly related to what I’ve posted, ref For MSFS2024, will the develops be addressing multi window/ VR support (pop-up windows) and POP OUT panel stop working in VR)
Loading into a vanilla session of MSFS2020, turning on the virtual G1000’s (to display the AHRS/ ADC on the PFD, with Map data/ ancillary data on the MFD), and popping out those displays will continue to update Until the display mode is switched to VR mode, where the popped-out windows will only display the last refreshed window piror to vr mode. Oddy though, I was noticing on the MFD, the low oil pressure state was inverting between Red on White to White on Red much faster (almost as if the polling was hardware locked to the primary display)
This is leaving a thought that there is still a display processing thread active within memory, but because of VR mode, it behaves like a boolean switch. Not sure if the reasoning was an oversight or because of the stereoscopic 3d to 2d projection would be a reference to subordinate display processes/threads (and may cause display issues on other displays).
Or in simple terms, the thought is VR mode causes a different output which any secondary displays must then be reconverted back to 2D (instead of having multicore process)