Harp Engine - Draggable Marker Demo - performance issues

[Mateusz-H]

trafficstars

After recreating demo from ['here'] and changed app to use HARP from ['here'] the demo became unusable due to performance issues [checked on chrome and edge].

There should be no visible downsides when using HARP [performance should be at the same level]

Demo of Draggable Marker using HARP as engine

https://github.com/heremaps/maps-api-for-javascript-examples/assets/70590196/329993c9-d659-4235-8069-a29e3d1fdb06

Thanks for help.

[Mateusz-H]

This also may not be issues with performance but with the way updates are performed, so the draggable markerk on HARP seems to "lagging" but in reality we are just getting update only when we "stop" for a while. This should not be the case if i WANT marker to be "draggable"

[AlessandroSalvetti]

Same issue here, with all my draggable markers. Any solution?

[AlessandroSalvetti]

I just made a jsfiddle where the problem is clearly visible here .

I started from your example of draggable markers (link), and added the HARP engine as in your guide (link)

[dbacarel]

Hi, the performance of volatile objects has been improved as of v3.1.63.1, released in April 2025 https://www.here.com/docs/bundle/maps-api-for-javascript-release-notes-3.1.63.1/resource/Maps_API_for_JavaScript_HLP_v3.1.63.1_Release_Notes.pdf