It would help if you could provide some more info:
- What web browser are you using? Chrome, FireFox, Edge, IE, etc?
- Have you tested your workflow in a different web browser?
- What are you doing when this occurs? Please be specific in your workflow - can you please provide repro steps?
- Is this behavior new? Was your workflow working previously and this just started happening recently?
- Have you tried to clear the web browser cache, close the browser, then re-open the browser?
Are you still experiencing the crashing?
There haven't been any performance issues reported so I think we should troubleshoot this as an issue specific to this map.
You can always check for performance issues here:
Hi this issue has just occurred again when going into the app on my iphone.
I will see about logging a support call with ESRI UK, it is for an event I am organising
Map link below