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Performance changes through the day? What causes such fluctuation?

I have an app which is loading a fair amount of data, and I've applied all manor of tweaks to refine and optimise the loading time, but it's a little difficult to measure because performance sometimes seems to fluctuate enormously whether I've changed anything or not.


As an example, I published some changes this morning. Performance was suddenly terrible - 1 minute or more to load the app, buttons within that app that call data also take ages, etc. I immediately assumed I'd done something wrong and dived into the app to work out what I'd changed.


An hour later, I've not published or changed anything, but performance is suddenly great again.


I've ruled out the network by trying the app on a different network - on my mobile in fact. Performance of the app is consistently fast or slow across networks and devices, suggesting it's not related to activity.


What factors influence performance of my apps when nothing has changed? Since I'm pulling data from SharePoint (365, not on prem), can activity on SharePoint affect it? Anything else?

Community Support Team
Community Support Team

Re: Performance changes through the day? What causes such fluctuation?

Have you configured any formula under the OnStart property when loading the App under Web Editor?


If yes, then please consider move it to the OnVisible property of the firstscreen.


Further, a Fiddler trace is needed if it requires a further investigation.

Please take a look at the blog below for the performance consideration:

Performance considerations with PowerApps


Please reach me through Private message, or Email to v-micsh at, if you would like a further investigation for the Fiddler Trace.




Community Support Team _ Michael Shao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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