Sli in destiny 2 has been "supported" for a long time, but bungie didn't really make the game compatible with SLI itself. I recently bought a new gpu for my pc to SLI them. I loved getting those extra frames they gave me until I explored the game destiny 2. The game constantly seems to crash with sli but without the game does not. I hope someone else can find me a fix for the amount of craahing in destiny 2.