Do i need Gsync to run 1440p at 144hz? triple monitor?

[rparker]

my pc spec
i7@5gig
1080ti
16gigs @ 3600
ssd drive

i can run project cars 2 with my samsung vr maxed out with x2 multi samples at 90fps and 90hz without a hich. but that not 3 screens at 2560x1440.

i guess i can afford to pay for Gsync but it just dont feel right to pay that much extra for it.

thoughts and thanks