# Glide apps builder very slow in browser **URL:** \ **Category:** Ask for Help\ **Created:** [September 26, 2023, 12:34pm UTC](https://community.glideapps.com/t/glide-apps-builder-very-slow-in-browser/66530 "2023-09-26T12:34:53Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![nathanaelb](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/nathanaelb/32/43079_2.png) [@nathanaelb](https://community.glideapps.com/u/nathanaelb)\ **Post date:** [September 26, 2023, 1:42pm UTC](https://community.glideapps.com/t/glide-apps-builder-very-slow-in-browser/66530/2 "2023-09-26T13:42:46Z")
There have been a lot of good explanations by Jeff about app performance. I wish I had bookmarked some of his posts. A few ideas. **Data Editor: send only needed data to the user’s device and if possible keep things in Glide** - If possible, use Glide Tables over any other 3rd-party data source (Google Sheets, Excel, Airtable, etc.) - Avoid Airtable. The amount if troubleshooting and questions in the forum are a good indicator that Airtable is to be avoided. This is my personal view only. - When appropriate, use Row Owners. Less data will be downloaded to user devices, pages should load more quickly. - (Relation vs Query. When you set up a Query column, Glide will let you know when using a Relation instead would enhance performance. I wouldn’t worry about this too much, but it’s worth noting that Glide itself has a warning message at times.) - (Single Self Relations seem best avoided.) **Layout Editor: don’t load too much on a single tab** - Avoid duplicating collections on the same tab yet displaying different information via visibility conditions or sorting. - Avoid having too many images load on a single tab. - Performance in the builder and in production on a device can be different: test outside of the builder. --- _[View the full topic](https://community.glideapps.com/t/glide-apps-builder-very-slow-in-browser/66530)._