Out of BAR memory, allocating uniform buffers on host-local memory, expect degraded performance!

Hi.
I just started with SDL GPU. I have a very simple hello world setup rendering a cube. Everything is working as expected, except a warning I get:

[INFO ] — [2025-12-29 13:08:31] SDL GPU: SDL_GPU Driver: Vulkan

[INFO ] — [2025-12-29 13:08:31] SDL GPU: Vulkan Device: Microsoft Direct3D12 (NVIDIA GeForce RTX 4070 Laptop GPU)

[INFO ] — [2025-12-29 13:08:31] SDL GPU: Vulkan Driver: Dozen Mesa 25.3.0-devel (git-c8fa4e643e)

[INFO ] — [2025-12-29 13:08:31] SDL GPU: Vulkan Conformance: 0.0.0

> [WARN ] — [2025-12-29 13:08:31] SDL GPU: Out of BAR memory, allocating uniform buffers on host-local memory, expect degraded performance!

I only call PushGPUVertexUniformData once per frame, uploading a vire projectin matrix.
I commented that out to see if that was the issue, so my render loop wa simply.

BeginGPURenderPass(command_buffer,&color_target, 1, nil) sdl.EndGPURenderPass(render_pass)

I still get the warning. There is not call to PushGPUVertexUniformData in myproject now.

Can someone help me shed some light on the warning?

The warnig popus up when running:

sdl.CreateGPUDevice({.SPIRV}, true, nil)