Meta Quest 3 graphic glitch

I have this graphic glitch, which you can see, whenever I launch one of my apps in the quest, standalone. It s happening only when I look in certain parts of the scene, appears for a few seconds, then dissappear and so on.
I tested in many ways, nothing extraordinary happens in those parts of the scene, polycount is the same, no spikes, batches are the same.

I m using Unity 6.3 LTS, Meta Integration version 83, linear color space, Vulkan.

It looks like a Vulkan glitch because if I switch to OpenGL, it doesn't show.

Of course, for years it is known that Vulkan is better for performance with these kind of risks, and OpenGL is more stable. Does anyone encountered anything like that?

Thank you.