topic Re: Experiencing Experience Builder Online Performance issues and bugs in ArcGIS Experience Builder Questions

Experiencing Experience Builder Online Performance issues and bugs

FranklinAlexander — Wed, 06 May 2026 13:23:11 GMT

Just wandering if anyone else is experiencing performance issues with EB online lately. After about the first hour or so, EB starts getting extremely slow and I start experiencing minor, but annoying bugs. Most common is when trying to make styling changes to a panel, widget, etc. (ex. border radius) not being applied to the panel, or at least it doesn't appear they are being applied. I am running EB in Chrome, so not sure if this is a browser issue and I don't want to run EB in another browser unless I have no choice. Closing the browser and reloading EB doesn't seem to help, so I am having to restart my computer to get EB to run correctly. Could it be a cache issue? My browser cache (image and files) was up to 253 MB which I did clear, but that doesn't seem high enough to me to be causing issues since my PC has plenty of available memory. Unless Esri stores the cache for the working projects at ArcGIS online and I could see that being an issue. Just curious if anyone has any thoughts on this.

Re: Experiencing Experience Builder Online Performance issues and bugs

Laura — Fri, 15 May 2026 18:30:45 GMT

Have you checked your RAM/GPU? If in an incognito window is it the same?

Re: Experiencing Experience Builder Online Performance issues and bugs

David_McRitchie — Tue, 19 May 2026 16:08:39 GMT

Just to add to Laura's comment, are we seeing this when configuring an Experience, or using a published one?

Experience Builder has a lot of tooling and capability within it, and so the configuration can often be a cause of poor performance.

Based on the symptoms, I would suspect we are seeing this with a published Experience? Could it be that there is are a lot of elements that utilise Lazy Loading? This would delay requests until specific elements are interacted with, with the caveat that once an item is Lazy Loaded, it will continue to send requests until the web page is refreshed.

Obviously, with any performance problem, it can feel like finding a needle in a haystack, so just give a shout if you want to discuss this further.

Hope that helps

David