Importing/parsing animations (from gltf) takes too long

[kzhsw]

Since it’s about performance, profile it with the devtools, it would help more with a flame chart or a dump.

Performance features reference  |  Chrome DevTools  | ...

Also, if you have a lot of frames, check if this helps (if it does not work, switch to 5.x since if was made a long time ago)

Animations: storing key frames in typed arrays

Keyframes in Babylon.js are stored with array of objects. Some animations exported with millons of key frames, with the object mode, it would take more memory than stored with typed arrays, like Float32Array. Without the object per frame, it would be much harder for features like per-frame interpolation and tangent to be implemented, so this could be an optional feature for those suffers too many keyframes without these advanced features. See code in playground:

TODOs

compact for gltf with 4-…