Windows 10 will download the necessary drivers if any are needed, (I don't believe it requires any on win10, 8 & 7 as they are ether baked in or downloaded on install), always worth getting the updated Nvidia drivers just to be sure but any before the turn of the year I would have thought would be fine.
Check in Windows display settings to see if you're on G-sync. There you'll be able to set 144hz, G-sync or ULBN.
Most computer hardware nowerdays is auto installation/plug & play (showing my age here as the early days you had a to self install everything), sit back and enjoy !
A tip from me with regards to colour settings etc, would be use others settings as a bench & then adjust to taste. Each panel is different (not massively) & so is everyone's taste in brightness, gamma, colour & contrast.
OK so I finally took the plunge and bought one of these. I've not had a new monitor for far too many years and there's one thing that I'm unsure on. Do I need to install monitor drivers or not? I've set up the monitor using the Nvidia Control Panel to how I want it, I've tweaked the colour and brightness/contrast settings. What do the monitor drivers actually do?