FSR3 doesn't converge with highly saturated colors

[dreamy crag]

When I render my scene in grayscale, it converges just fine. But if I use saturated colors instead, the borders between chunks along the y axis never converge

the screenshots were captured at 10x upscale but the issue persists even at native resolution

[dreamy crag]

Still stuck on this a week later xD

https://pastebin.com/sBTcwwqf