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The ideal allocation would be VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT like in 1.12.3, but vma picked an index that's actually not mappable VMA_MEMORY_USAGE_GPU_TO_CPU selects VK_MEMORY_PROPERTY_HOST_CACHED_BIT, which seems to hurt performance VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT + VK_MEMORY_PROPERTY_HOST_COHERENT_BIT selection with VMA_MEMORY_USAGE_CPU_ONLY would suffice for the workaround, and get better performance