Improve responsiveness of the UI while retrieving/processing large amounts of data

[fedorov]

Currently, UI is blocked when retrieving the data, and this can take minutes for large objects.

[wayfarer3130]

Do you have the breakdown between the server and client side processing? In specific, what happens if you try it against a static dicomweb instance for the metadata - that has the data already compressed/generated and simply serves it, so if the problem is server side processing, a solution which caches the metadata ahead of time can be very helpful.

[fedorov]

@wayfarer3130 our setup is that the viewer must function with the standard DICOMweb server.