So I've got a support ticket open with Steam cause Big Picture crashes when it attempts to switch the primary display. (I have two)

But that aside, the things I notice when the switching happens are a bit odd.
When the switch occurs
--the resolution for each display seems to temporarily go to 800x600, as evidence from the size of the windows after the switch.
--a lot of flickering happens
--the "device disconnected" and "device connected" play a couple times

I try to avoid switching my primary display whenever possible, especially when I have to rearrange all my windows right after.
I wonder if there is anything that DF does that affects this and if it could be possible to avoid having that crazy flicker and resize when switching.
If this isn't something that DF isn't affect then, well, I'll have more investigating to do.

Just tested. Same issues.
DisplayFusion had nothing to do with it.

Thanks again for the attention.