[Feature Request] Improve Multiframe performance - metadata

[sedghi]

What feature or change would you like to see made?

We currently parse the metadata by creating the frame metadata from shared and per-frame sequences each time, which is inefficient. We should explore a better approach.

One suggestion by @wayfarer3130 is to use JavaScript objects with inheritance. We can start with an object containing all the instance data we have, then use:

const shared = Object.create(instance, ...sharedFunctionalGroups);
SharedFunctionalGroupsSequence = shared;

For the functional groups, use a hidden value per frame with:

Object.create(shared, ...perFrameValues);

This method will be more memory-efficient and will avoid constantly recreating objects. We can also implement a caching strategy for it.

Why should we prioritize this feature?

Faster multiframe