# How can I optimize performance in large projects (2000+ blocks) **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [February 12, 2020, 10:18am UTC](https://community.thunkable.com/t/how-can-i-optimize-performance-in-large-projects-2000-blocks/460012 "2020-02-12T10:18:56Z")\ **Posts on this page:** 1\ **Showing post:** 24
**Author:** ![davidsobhysabetb](https://avatars.discourse-cdn.com/v4/letter/d/ce73a5/32.png) [@davidsobhysabetb](https://community.thunkable.com/u/davidsobhysabetb)\ **Post date:** [February 13, 2020, 8:05pm UTC](https://community.thunkable.com/t/how-can-i-optimize-performance-in-large-projects-2000-blocks/460012/24 "2020-02-13T20:05:29Z")
After trying the Fade-in and Fade-out great example project of @Kyle_Williams > [@Example Project: Fade-in and fade-out column, progress bar, text-based loading animations (proof of concept)](http://community.thunkable.com/t/example-project-fade-in-and-fade-out-column-progress-bar-text-based-loading-animations-proof-of-concept/66762): > > I thought this might be handy for someone. Just playing around with trying to do animations within Thunkable without using Lottie files. These are only tested in iOS but most likely work in Android. (Update! The fade-in column does not work correctly on Android; use [this version](https://x.thunkable.com/copy/265fa613b6db2c81c670edfa946337e5) to see the other examples in Android). Project link [https://x.thunkable.com/copy/179edd8cce5e70cf619eae8c40a721a4](https://x.thunkable.com/copy/179edd8cce5e70cf619eae8c40a721a4) Fade-in column This fades in a column that is not visible when the app first starts. Could be useful f… I believe now it’s not a blocks problem, but it’s a UI issue ( I think it’s general issue with low performance devices ) as the example has only 147 blocks ( small project ) works great on good performance devices ( like XS Max ) but lagging on medium devices ( like 5s Realme note7 ) Or what do you think ?! --- _[View the full topic](https://community.thunkable.com/t/how-can-i-optimize-performance-in-large-projects-2000-blocks/460012)._