# Zoom Web SDK 1.9.0 poor performance

**URL:** <https://devforum.zoom.us/t/zoom-web-sdk-1-9-0-poor-performance/43121>\
**Category:** Web\
**Created:** [February 11, 2021, 12:06pm UTC](https://devforum.zoom.us/t/zoom-web-sdk-1-9-0-poor-performance/43121 "2021-02-11T12:06:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kamleshwithbang](https://avatars.discourse-cdn.com/v4/letter/k/8e7dd6/32.png) [@kamleshwithbang](https://devforum.zoom.us/u/kamleshwithbang)\
**Post date:** [February 11, 2021, 12:06pm UTC](https://devforum.zoom.us/t/zoom-web-sdk-1-9-0-poor-performance/43121/1 "2021-02-11T12:06:07Z")

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**Description**  
Integrated Zoom Web SDK 1.9.0 .

**Error**  
Even though meeting can be launched but has errors  
Audio and Video Quality is very poor most of time getting echo  
sound, audio keep breaking, video is hanged up  
Constant Freezing of Screen  
Same problems exists when web sdk 1.8.6 used  
Performance of web sdk is not any where near to Zoom Desktop client  
Tested on same network with good bandwidth zoom desktop client runs  
meeting smoothly but web sdk not even allow to communicate in meeting  
only chat features work properly

1.8.6 and 1.9.0 both versions were used with same result  
Global CDN versions were used on html page

**Device (please complete the following information):**

- Device: desktop pc
- OS: windows 10
- Version: 1.9.0/1.8.6
- Browser:. Chrome and firefox

**Additional context**  
Tested with both Global CDN and China CDN  
Test with min 2 participants to 5 participant within meeting both meeting has same problems

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**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\
**Post date:** [February 12, 2021, 8:33pm UTC](https://devforum.zoom.us/t/zoom-web-sdk-1-9-0-poor-performance/43121/2 "2021-02-12T20:33:51Z")

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Hey @kamleshwithbang,

Thank you for reaching out to the Zoom Developer Forum. You’re correct in that the Zoom Desktop Client will provide the best performance. There is a known issue with high cpu usage on the [Web SDK](https://marketplace.zoom.us/docs/sdk/native-sdks/web#zoom-web-sdk).

Currently, the best workaround is to enable SIMD Support as outlined at the bottom of this article:

> **[New Webinar features for WebSDK](https://medium.com/zoom-developer-blog/new-webinar-features-for-websdk-84be8dd3b685)**
>
> As the world turns to Zoom to keep the world connected, schools are back in session and are looking for new ways to host virtual…

Let me know if that helps.

Thanks,  
Max

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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:** [March 15, 2021, 6:34am UTC](https://devforum.zoom.us/t/zoom-web-sdk-1-9-0-poor-performance/43121/3 "2021-03-15T06:34:10Z")

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Closed on March 15, 2021, 6:34am UTC

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