Hi Leonidas,
The link was broke on iOS ( low frame rate, aspect is wrong ) the first few times I tried to load it.
( see also Different speeds and crash on iOS with new Model Viewer Starter Kit scene )
When it did load after the fourth refresh, it worked great ( nice and smooth ), the visuals of the destination lines are very cool, using 4-point Bezier curves! I’ll def keep it in mind if I need any of those features for a project.