I also have the same problem with my rx 9060 xt 16gb, i have a ryzen 9 5900xt and 32gb ram 3600mhz cl18, and when I play with 32 chunks in openGL I have above 240fps/330fps stable, but with Vulkan I get 120fps/160fps with a lot of stuttering, with 16 chunks I got 470fps/600fps stable with openGL and with vulkan I got 220/390fps with the same stuttering, even reducing to 8 chunks I still get the same stuttering its almost like the fps doesn't really matter at this point, maybe that’s a problem with resizeble-bar or frametime issues with the game, i don’t know
Denki Kun
I also have the same problem with my rx 9060 xt 16gb, i have a ryzen 9 5900xt and 32gb ram 3600mhz cl18, and when I play with 32 chunks in openGL I have above 240fps/330fps stable, but with Vulkan I get 120fps/160fps with a lot of stuttering, with 16 chunks I got 470fps/600fps stable with openGL and with vulkan I got 220/390fps with the same stuttering, even reducing to 8 chunks I still get the same stuttering its almost like the fps doesn't really matter at this point, maybe that’s a problem with resizeble-bar or frametime issues with the game, i don’t know