Unfortunately it is not a bug, according to Asobo it is an intended side effect of this new culling technique (which brought a massive 3x memory reduction and improved CPU performance). We’re seeing pop-in and stutters while panning the camera or switching views because the simulator is constantly loading and unloading assets into memory.
Since it’s not unintended behaviour, I believe it might be more worthwhile to request a slider that allows us to adjust the amount of scenery that’s being culled, with the option to completely disable it as well. If it’s hard-coded it might not be possible to let the user tone down this behaviour, so I hope the community asks for it and that they’ll respond soon.