I have had the same issue, but more with AMD GPUs and I found that if I set the frame rate cap in the Radeon software to match my monitors refresh rate and then use enhanced sync. (Note: I had to adjust the global settings is does not work if I tried to create a profile specifically for this game.) Then in Destiny 2 setting disable Vsync and frame rate cap. I get silky smoother performance. I am using driver 19.1.2 and my system specs below.
Asus X470 Prime Pro
Ryzen 2700x
RX Vega 64
32GB RAM DDR4 2666
500GB SSD (OS)
1TB Hard Drive 7200 rpm (Destiny2)
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I have been having the worst performances since D2 launch with my AMD,ever since forsaken but it got worse with the season pass, using your recommendations I can finally play with framerates well above 90 while keeping those stable 60 even in stupid maps like Citadel that used to be almost unplayable.