# DAO What causes screen share lag?

**URL:** <https://devforum.zoom.us/t/dao-what-causes-screen-share-lag/26722>\
**Category:** macOS\
**Created:** [August 10, 2020, 3:11pm UTC](https://devforum.zoom.us/t/dao-what-causes-screen-share-lag/26722 "2020-08-10T15:11:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ajpearceUK](https://avatars.discourse-cdn.com/v4/letter/a/b2d939/32.png) [@ajpearceUK](https://devforum.zoom.us/u/ajpearceUK)\
**Post date:** [August 10, 2020, 3:11pm UTC](https://devforum.zoom.us/t/dao-what-causes-screen-share-lag/26722/1 "2020-08-10T15:11:34Z")

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I just tested out Tuple. Buttery smooth screen share. Much lower CPU usage. But clients don’t want to switch.

What exactly causes the lag with Zoom OSX screensharing? I don’t get lag until I’m in a live call AND screensharing. Is there a kext that zoom uses for screensharing? How is it designed? Is there different drivers I can try to search for a smoother experience? If I watch the stats page CPU is at 60% and occasionally peaks to 80%.

How much work is it for Zoom to fix? Is it something that could be done overnight by dropping in a prewritten screendriver or do you think it would need a whole rewrite?

**Description**  
A clear and concise description of what the question is.

**Which version?**  
Version: 5.0.3 (24978.0517)

**To Reproduce(If applicable)**  
Steps to reproduce the behavior:

1. Start meeting as host with one viewer
2. Screensharing on with audio too
3. Monitor CPU usage screen in preferences

**Screenshots**  
If applicable, add screenshots to help explain your problem.

Platform:  
10.15.4 (19E287) Catalina

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**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\
**Post date:** [August 12, 2020, 5:33am UTC](https://devforum.zoom.us/t/dao-what-causes-screen-share-lag/26722/2 "2020-08-12T05:33:30Z")

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Thanks for the post. It seems like you are facing issues with our Zoom client, which is out of the scope of what this forum is for(This forum is for Marketplace Apps). Please provide feedback to [https://zoom.us/feed](https://zoom.us/feed) or try to contact Zoom client support at [https://support.zoom.us/hc/en-us/requests/new](https://support.zoom.us/hc/en-us/requests/new) and one of the Zoom experts will be happy to assist you.

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**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\
**Post date:** [August 12, 2020, 5:33am UTC](https://devforum.zoom.us/t/dao-what-causes-screen-share-lag/26722/3 "2020-08-12T05:33:34Z")

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Closed on August 12, 2020, 5:33am UTC