3D objects disappear until number 10, on RTX

Hi everybody,
We are a company that develops a 3D point cloud engine on Vulkan (and Windows 10). Our software also allows creating 3D objects.
Everything works fine on our GTX computers, but when we do the test on our RTX machines (2060 and 2070), 3D markers from number 1 to 10 aren’t displayed. As soon as we reach number 11, they all appear suddently.
We tried different drivers but it’s still the same.
Any idea on what’s going on?

Kind regards