RTSS (Riva Tuner Statistics Server) doesn't cap my framerate like it's set to. I know there is an in-game limiter but I get screen tearing. And if I use VSync, I get input lag which is why I have to use RTSS for my games. I don't have any of the overlay tools enabled as I know those are not compatible but the actual framerate and scanline sync features do not do anything to Destiny 2.
Steam Account ID: ZuperGreek (ID: 76561198073678655)
Configuration Info
CPU: Intel Core i9-7940X
GPU: Nvidia GeForce GTX Titan X SC 12GB
RAM: 128GB DDR4
GPU Driver Version: Nvidia 441.41
Operating System: Window 10 Pro (version 1903)
If you have a G-Sync monitor cap in game FPS 3 frames below max refresh and enable V-Sync at monitor's max refresh. That's the lowest input lag you'll get with this game. Even if it supported RTSS it wouldn't be better.