Hi All, we are currently considering switching from Three.js to Babylon for a large scale WebAR project. So far there are a lot of things that make this switch worth while but we keep having one problem and we are not able to solve it. At random intervals different meshes simply disappear. For example the windshield of a car, or we have a model of a rhinoceros where sometimes everything disappears except the eyes. On the desktop browser it works OK but on mobile, which is our main target, we keep having this problems and we have not been able to find any pattern, much less a solution. Any ideas would be very much appreciated.