Hello!
1-2 seconds is a bit too quick for the issue to take place on the host.
Can you confirm the content of the displays is exactly where it was before the blackout and is NOT moved to the remaining display?
It sounds like your monitors are losing synchronisation. I would put that on the link to the monitor itself.
Once you've confirmed the screen content behaviour, we can look at mitigation.
Kind regards,
Alban
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