# PowerChart not performing correctly when launching a test Perspective Session

**URL:** <https://forum.inductiveautomation.com/t/powerchart-not-performing-correctly-when-launching-a-test-perspective-session/94111>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [August 2, 2024, 12:35pm UTC](https://forum.inductiveautomation.com/t/powerchart-not-performing-correctly-when-launching-a-test-perspective-session/94111 "2024-08-02T12:35:25Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![djs](https://avatars.discourse-cdn.com/v4/letter/d/e47774/32.png) [@djs](https://forum.inductiveautomation.com/u/djs)\
**Post date:** [August 2, 2024, 1:46pm UTC](https://forum.inductiveautomation.com/t/powerchart-not-performing-correctly-when-launching-a-test-perspective-session/94111/2 "2024-08-02T13:46:19Z")

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1. Are you getting any errors in the [logs](https://www.docs.inductiveautomation.com/docs/8.1/platform/gateway/status/diagnostics-logs) when trying it out in the browser?
2. How did you implement your pen filtering? Can you [show us some code](https://forum.inductiveautomation.com/t/wiki-how-to-post-code-on-this-forum/77831)?
3. 76 Historical Pens is a lot, and I expect the queries to be a little slow under such load...Do you have to have all pens loaded from the start, or can you have a few different pages with the different pen configurations? Or perhaps buttons that [add the pens](https://forum.inductiveautomation.com/t/add-or-remove-the-power-chart-props-pens-object-by-script/75498) needed?

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