I've always had issues with loading into Destiny 2, and I still have no idea why. When playing with a fireteam, I'm almost always the last to load, leaving everyone significantly ahead of me before I can even spawn. This applies to missions, matchmaking lobbies, loading into planets from orbit, etc.
My specs are Intel i7-770HQ, AMD RX 580, 12 GB ir DDR4 RAM, and 2 different SSD's.
Make sure all drivers are up to date, mainly your motherboard. Try adjusting in game settings to see if that has an impact.
Do you only notice an issue with Destiny, or do you see it on other games as well.