We've been building a web app in experience builder. The first page is a map with a sidebar with the map layers widget. When previewing the app, the map loads okay (5-10 seconds), but the map layers widget can take up to a minute to load. I've tried to optimise it by switching off all the layers, and saving the web map using the new map viewer. However, it hasn't sped up the load time. Has anyone found a way to speed up the load time? There are approximately 100 layers in the map but they are all switched off. See the attached image. Thank you, Heather.
I am also having the same experiences. I have created first a webmap in the new map viewer and using this webmap to build up in EB. in the map viewer the performance is normal. The performance for popups is also dramatically slow.
I have raised a case with Esri's technical team who are assiging a subject matter expert. I haven't heard back yet but I will post any solution if there is one on here.
Hopefully, they will fix it, otherwise EB is a lose canon. I wondering if you also experiences a slow response with the popups in the map. I think, both are related with each other.