You are right. Shouldn't have a delay .
Something I ran into though:
One of the Nvidia updates pushed from Microsoft really confused my system. I had to download a 'fresh' driver from Nvidia and do a 'clean install' with it to fix the issue. It caused the monitors to be mis-identified and the monitor ID for the two monitors was opposite when comparing Windows ID and Nvidia ID. During the last several months when I have gotten a driver update from either party the update always turns off my second monitor. I have isolated the problem to Nvidia and not Microsoft. For some reason the Nvidia driver does not 'see' my settings for the two monitors (both Dell Touch monitors, 24 inch) and turns one off whenever there is a new driver.
Have been coping with it and reported to Feedback Hub my findings.
Anyway, might be worth it to reinstall the driver to be sure.
Looks like you have a pretty nice system.