# Significant Delay in Initial Zoom Video SDK Sessions

**URL:** <https://devforum.zoom.us/t/significant-delay-in-initial-zoom-video-sdk-sessions/131749>\
**Category:** Video SDK\
**Tags:** video-sdk\
**Created:** [April 22, 2025, 7:39am UTC](https://devforum.zoom.us/t/significant-delay-in-initial-zoom-video-sdk-sessions/131749 "2025-04-22T07:39:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Ashwani](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ashwani/32/68685_2.png) [@Ashwani](https://devforum.zoom.us/u/Ashwani)\
**Post date:** [April 22, 2025, 7:39am UTC](https://devforum.zoom.us/t/significant-delay-in-initial-zoom-video-sdk-sessions/131749/1 "2025-04-22T07:39:24Z")

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We have noticed consistent delays when initiating our first few Zoom meetings using the Video SDK. On average, creating these initial sessions takes approximately 14 to 20 seconds. Additionally, new participants joining these early sessions sometimes experience delays lasting several minutes.

zoom session ids : ( These ids don’t have network quality values as well )

pMbWU4kfQxuEPhgYsvX5gQ==  
MClGsDN/SZy3c7kDRXetpQ==  
CAPVFuoiThKiCnlq9/3v3w==

Could you please confirm if there’s an initial warm-up or initialization period inherent to the Video SDK? Understanding this is critical as the current latency is negatively affecting our product’s user experience.

Our goal is to ensure minimal delays, both during initial and subsequent meeting sessions.

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**Author:** ![richard.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/richard.zoom/32/41061_2.png) [@richard.zoom](https://devforum.zoom.us/u/richard.zoom)\
**Post date:** [April 23, 2025, 6:59pm UTC](https://devforum.zoom.us/t/significant-delay-in-initial-zoom-video-sdk-sessions/131749/2 "2025-04-23T18:59:30Z")

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Hello Ashwani,

What are the platforms you are using VSDK on, and what versions of the SDK?

Thank for your patience,  
Richard

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**Author:** ![scottmahonis](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/scottmahonis/32/71404_2.png) [@scottmahonis](https://devforum.zoom.us/u/scottmahonis)\
**Post date:** [September 25, 2025, 4:53pm UTC](https://devforum.zoom.us/t/significant-delay-in-initial-zoom-video-sdk-sessions/131749/3 "2025-09-25T16:53:58Z")

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I’m seeing this in the ZoomVideoSDK for iOS, I’m using the latest version as I’m writing this, 2.3.5. I have a log that fires once the Session connects, then I have to wait 14-20 seconds for onSessionJoin() to be called, and then another 8-9 seconds of waiting for the video to appear on the screen. I’m not sure about the lag from connecting to onSessionJoin, but the video appearing to me signals a threading issue with avfoundation.

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**Author:** ![scottmahonis](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/scottmahonis/32/71404_2.png) [@scottmahonis](https://devforum.zoom.us/u/scottmahonis)\
**Post date:** [February 13, 2026, 4:39pm UTC](https://devforum.zoom.us/t/significant-delay-in-initial-zoom-video-sdk-sessions/131749/4 "2026-02-13T16:39:16Z")

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For anyone else reading this, I figured out it was due to Xcode/iOS 26 issues. Going to edit scheme \> and checking OFF debug executable fixed this.