Zoom HD video needs roughly 3.8Mbps upload and download — on an NBN plan with a low upload speed, that upload number is often the real bottleneck, not the download speed everyone focuses on. Use Ethernet if possible, close other bandwidth-heavy apps during the call, and check your router's QoS settings to prioritise video-call traffic if calls are a regular part of your day.

Zoom高清视频大约需要3.8Mbps的上传和下载——很多NBN套餐上传速度本来就低，大家都盯着下载速度看，其实上传才是真正的瓶颈。尽量用有线连接，开会时关掉其他占带宽的程序，如果视频会议是日常刚需，可以在路由器QoS设置里给视频流量优先级。