Seems to be oddly hit and miss. For me it runs very smoothly, 150 to 180 fps at medium settings, 3440x1440, FSR4, 5800X3D, RX 9070 XT.

But I've also seen posts from people with stronger set ups saying they're having horrendous performance issues.

So my assumption is that the optimisation is actually good, but there are weird bugs on some people's PCs degrading performance