I wish Frontier would give Odyssey a free fly week like Star Citizen has. Performance in Odyssey is a game of Russian roulette. Some people have no problems with performance on older hardware, while others suffer terrible framerates and graphical downgrades on much newer hardware. I've seen folks in this forum with identical hardware to my own say they get bad performance, so I'm not ready to roll the dice with actual cash just yet.
Disclaimer - anything less than a locked 60 fps (vsynced to my 2D display) is "bad performance" on my PC. I don't need or even want higher (except in VR), but I'm quite bothered by anything lower, especially if it's jittery, stuttering, or lagging.
Oof, I feel I must clarify my statement. I had an older GPU then than I do now and forgot this. I didn't think of it when I noticed that the rings ran better because it wasn't a planned upgrade. My previous GPU cooked itself because of a bug in the driver. Still, the asteroids look different, and there isn't even a hint of any stutter now so it really seemed like they'd done something.
But yeah, GPU change.