About the setting to check

1. Turn off the “Group HD Video” setting:
   • Go to the Zoom web portal.
   • Click on [ Account Settings ] and select the [ Meeting ] tab.
   • Scroll down to the [ In Meeting (Advanced) ] section.
   • Find the “Group HD Video” setting and set it to [ OFF ].
   • Click on Save to apply the change. Note: This setting can improve video quality in group meetings but may use more bandwidth.
2. Disable “Optimize for full screen video clip” when sharing screens:
   • Start a screen sharing session.
   • Click on the Advanced tab at the top of the screen sharing window.
   • Uncheck the box next to “Optimize for full screen video clip”.
   • Click on OK to apply the change. Note: This setting can reduce the image quality during screen sharing if selected.
3. Check the packet loss rate:
   • Open the Zoom app and go to [ Settings ].
   • Select the [ Advanced ] tab.
   • Check the packet loss rate under the [ Screen sharing ] section.
   • If the packet loss rate is above 40%, it may affect the Zoom performance and video quality.
   • Consider upgrading your internet connection or network infrastructure to reduce packet loss.

Recommended Operating Requirements for ZOOM (Client Application) —————————-

　One-to-one video calls:

・ HQ video: 600 kbps / 600 kbps (up / down)

・ HD video: 1.2Mbps / 1.2Mbps (up / down)

　Group video calls:

・ HQ video: 600 kbps / 1.2 Mbps (up / down)

・ For gallery view: 1.5Mbps / 1.5Mbps (up / down)

　Screen sharing (without video thumbnails): 50-75 kbps

　Screen sharing (with video thumbnails): 50-150 kbps

　VoIP voice: 60-80 kbps

For the latest information, please refer to the system requirements of PC, Mac, Linux .