Like others, I hit this as well. Ryzen 5600X + RX 6900 XT and I'm getting 41fps in Tangled Shore at Theives Landing. Also, when playing Crucible, I've noticed if someone fires a Jotunn at me, the game basically drops to 0 fps – it stutters for a second or two, sometimes I see 4 in the fps counter, but that seems unlikely. This wasn't a problem before I did my hardware upgrades! Hopefully this gets resolved soon. Thanks Bungie. :)