Looks like you're making good progress on windows, less spikes in terrain than I saw last time (I think it was the same project).

We also created a 3D renderer for sports tracking app Ayvri. Our standard player is Cesium, but if you click on the view beta link, you'll see our custom renderer. Still improvements to be made in tile loading.

https://ayvri.com/scene/v5plro09jr/cki6prg1a00013b6baegp6ub6