# StP: Changing an element color using a "set block" is really slow

**URL:** <https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390>\
**Category:** Issues / Bugs\
**Tags:** help\
**Created:** [March 1, 2024, 11:10am UTC](https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390 "2024-03-01T11:10:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dosantoss](https://avatars.discourse-cdn.com/v4/letter/d/d2c977/32.png) [@dosantoss](https://community.thunkable.com/u/dosantoss)\
**Post date:** [March 1, 2024, 11:10am UTC](https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390/1 "2024-03-01T11:10:13Z")

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Hi,

In the Snap-to-Place version, when you set a block to change the color or background color of an element, it takes almost 1 second to display the change on an iPhone 12 mini device (this doesn’t occure on Test preview).

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/2/a/2a6431c5211ac7933ce57403075562467c81a294.png)

Is there a way Thunkable team can accelerate this process?

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**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\
**Post date:** [March 1, 2024, 12:11pm UTC](https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390/2 "2024-03-01T12:11:09Z")

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Hello @dosantoss  
Thank you for sharing this issue.  
Could you please share how you tested the app on iOS?  
Have you published the app?

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<div class="post-metadata">

**Author:** ![dosantoss](https://avatars.discourse-cdn.com/v4/letter/d/d2c977/32.png) [@dosantoss](https://community.thunkable.com/u/dosantoss)\
**Post date:** [March 1, 2024, 12:12pm UTC](https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390/3 "2024-03-01T12:12:28Z")

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It’s not published yet, so I’m using the Thunkable live test iOS app.

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<div class="post-metadata">

**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\
**Post date:** [March 1, 2024, 12:15pm UTC](https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390/4 "2024-03-01T12:15:57Z")

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The most accurate way to test is to publish it on Testflight. Let us know if the issue persists after publishing it.

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<div class="post-metadata">

**Author:** ![dosantoss](https://avatars.discourse-cdn.com/v4/letter/d/d2c977/32.png) [@dosantoss](https://community.thunkable.com/u/dosantoss)\
**Post date:** [May 11, 2024, 9:35am UTC](https://community.thunkable.com/t/stp-changing-an-element-color-using-a-set-block-is-really-slow/2867390/5 "2024-05-11T09:35:17Z")

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I put my app on Testflight, but it still slow for changing element’s color or even text weight.