Ultrawide/120hz/gsync/dual monitor questions

[jubei]

Hi guys,

I have a few questions here that i am hoping people may be able to answer.

I have just today installed a 1080ti graphics card and set up my new Alienware 34" ultrawide with 120hz. Prior to this i have been using a 1440p 27" 60hz monitor with a gtx 970.

Here are the questions:

Should i be enabling gsync in nvidia control panel ALL the time? Is it suitable for all games including fps games?

Should i be running my games in fullscreen or borderless windowed, is there a performance benefit either way?

If i set up my older monitor as a dual monitor, does the fact it has only 60hz refresh affect the games running on my 120hz monitor? Also assuming i do the dual monitors, should i then be running games in windowed mode over fullscreen?

Anything i should know about the optimal setup for games, i read i should enable gsync (i'm sure its on by default in nvcp?), disabling vsync, and then capping my fps a few below 120 in order to remain in gsync, or can i just have vsync disabled and let the fps get as high as it likes?

I am mainly playing rocket league and pubg, looking to start destiny and fortnite.

Thanks a lot for any info.

 

[jubei]

Enable gsync

Full screen

2nd monitor will stay at 60hz, setup in nv. Make aw primary, full screen. 2nd screen will stay on desktop when gaming. (Good for team speak/discord etc)

Cheers man that's what I hoped. If I have gsync on but not vsync, I assume that on games where my card can hit over 120 it just turns the gsync off and didn't automatically enable vsync? Rather have a big of tearing (that I've never noticed in all these years) over a laggy input.