Zoom All Screens Mode scalability for online exam proctoring (~90 participants) | Community
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2026.ucpc.me
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June 24, 2026
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Zoom All Screens Mode scalability for online exam proctoring (~90 participants)

  • June 24, 2026
  • 1 reply
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Hello,

We are organizing a nationwide online programming contest and are considering using Zoom's All Screens Mode for online proctoring.

Our planned setup is:

- Approximately 90 participants per Zoom meeting
- All participants have their cameras enabled
- All participants share their screens throughout the contest
- Two proctors monitor participants using All Screens Mode
- Proctors will likely use Apple M1/M2/M3 MacBook Air/Pro devices with 16GB RAM
- Cloud Recording will be enabled for the entire meeting for post-event review and incident investigation

We would appreciate guidance on the following questions:

1. What CPU, memory, and network specifications are recommended for hosts/proctors using All Screens Mode at this scale?

2. Does Zoom have any documented participant limits or recommended capacities for All Screens Mode?

3. Does the host/proctor device process all participant screen shares simultaneously, or only the screen shares currently visible on screen?

4. Are there any best practices or recommendations for large-scale online exam or proctoring scenarios using All Screens Mode?

5. From a performance and reliability perspective, would Zoom recommend:
   - One meeting with approximately 90 participants and two proctors, or
   - Two meetings with approximately 45 participants each, or
   - An even smaller meeting size?

6. For an online exam/proctoring setup, would reducing the meeting size from approximately 90 participants to 45 participants per meeting significantly improve stability or host-side performance?

7. Does enabling Cloud Recording materially affect host-side performance, network requirements, or the scalability of All Screens Mode in large meetings?

We are trying to assess potential operational risks before deploying this setup in a live contest environment, and any guidance would be greatly appreciated.

If there are any internal test results, case studies, or documentation related to large-scale All Screens Mode deployments, we would greatly appreciate any references you can share.

Thank you for your help.

    1 reply

    Annie warner
    Newcomer
    Annie warner
    Newcomer
    June 24, 2026

    Thank you for contacting Zoom Support.

    We appreciate the detailed information regarding your planned online programming contest and proctoring requirements.

    Based on general Zoom platform guidance, we recommend conducting a pilot test under conditions that closely mirror your expected production environment, including participant count, screen sharing, camera usage, cloud recording, and proctor workflows. Actual performance can vary depending on endpoint hardware, network quality, meeting settings, and participant behavior.

    Regarding your questions:

    1. Host/Proctor System Requirements
      For meetings involving a large number of simultaneous video feeds and screen shares, we recommend using modern multi-core processors, sufficient memory, and a stable high-bandwidth internet connection. Apple M1, M2, or M3 MacBook Pro/Air devices with 16 GB RAM generally provide strong performance, though actual capacity should be validated through testing in your specific use case.
    2. All Screens Mode Capacity
      We are not aware of publicly documented participant limits specific to All Screens Mode beyond the overall meeting capacity limits associated with your Zoom license and meeting configuration.
    3. Processing of Screen Shares
      The exact client-side processing behavior for All Screens Mode is not publicly documented. Performance may depend on the number of visible feeds, layout configuration, and other meeting activities.
    4. Best Practices
      • Conduct full-scale load testing before the event.
      • Use wired internet connections for proctors whenever possible.
      • Close unnecessary applications on proctor devices.
      • Ensure participants understand screen-sharing requirements before the contest begins.
      • Have backup proctors and contingency procedures available.

    5–6. Meeting Size Considerations
    In general, smaller meetings tend to reduce operational complexity and may improve monitoring effectiveness. Splitting approximately 90 participants into two meetings of approximately 45 participants each can provide benefits such as reduced monitoring load per proctor and improved resilience if issues occur in a single meeting. However, the optimal configuration depends on your operational requirements and testing results.

    1. Cloud Recording Impact
      Cloud Recording is processed by Zoom's cloud infrastructure and typically has less impact on host device performance than local recording. However, hosts still require a stable network connection, and overall meeting activity may influence resource usage.

    At this time, we are not aware of publicly available case studies, benchmark results, or detailed performance documentation specifically focused on large-scale All Screens Mode proctoring deployments.

    Given the scale and importance of your event, we strongly recommend performing a realistic end-to-end test with participant counts similar to your planned production environment before deployment.

    Please let us know if you have any additional questions or would like assistance reviewing your planned meeting configuration.

    Kind regards,

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