I get less FPS using Vulkan compared to OpenGL with AMD.
Here are my specs)
GPU: AMD Radeon RX 7800 XT
CPU: 12x AMD Ryzen 5 5600 6-Core Processor
For AMD OpenGL: OpenGL 3.3.0 Core Profile Context 26.3.1.260309
For AMD Vulkan Proprietary Driver: Vulkan 1.4.344 AMD proprietary driver 26.3.1
I included two images:
Left is Vulkan and Right is OpenGL. It’s all in f3, so you can find it there. You can see that I lose about 300 to 400 FPS when using Vulkan. Hopefully this helps with this snapshot.
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I also have a similar problem, i run a 5700x3d with a 9070 xt and my fps gets halfed when i use vulkan over amd, whether it be on an old windows install, new windows install, or linux.
Maybe this is a lot worse on amd 9000 gpus? i asked a friend on a 9060 xt 16 gb and he seems to also have the same problem, fps is more then halved in any situation on vulkan compared to opengl
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
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