# Performance of Fully Customizable SDK

**URL:** <https://devforum.zoom.us/t/performance-of-fully-customizable-sdk/44007>\
**Category:** Web\
**Created:** [February 23, 2021, 2:35am UTC](https://devforum.zoom.us/t/performance-of-fully-customizable-sdk/44007 "2021-02-23T02:35:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jdoud](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@jdoud](https://devforum.zoom.us/u/jdoud)\
**Post date:** [February 23, 2021, 2:35am UTC](https://devforum.zoom.us/t/performance-of-fully-customizable-sdk/44007/1 "2021-02-23T02:35:34Z")

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Hi,

Other in-browser video conferencing providers that use WebRTC for video are limited by bandwidth, which is why you see things like “Up to 200 participants (but we recommend 6-8)”. Generally a meeting with over 20 participants can begin to see bandwidth problems and decreased performance.

How does the tech that the new SDK runs on compare to this? Is it running on WebRTC? Are there performance limitations as the number of participants are increased?

Thanks!

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [February 25, 2021, 6:49pm UTC](https://devforum.zoom.us/t/performance-of-fully-customizable-sdk/44007/2 "2021-02-25T18:49:25Z")

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Hey @jdoud,

We will get back to you on these metrics. (CS-3198)

Thanks for your patience. 🙂

-Tommy

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [March 24, 2021, 8:50pm UTC](https://devforum.zoom.us/t/performance-of-fully-customizable-sdk/44007/5 "2021-03-24T20:50:38Z")

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Heye @jdoud ,

We don’t share its performance limitations at the moment.

Thanks,  
Tommy

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [April 24, 2021, 6:51am UTC](https://devforum.zoom.us/t/performance-of-fully-customizable-sdk/44007/6 "2021-04-24T06:51:33Z")

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Closed on April 24, 2021, 6:51am UTC

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