Resolution-to-bandwidth matching is the fix for the streamer who set their resolution to 1080p 60fps without checking whether their bandwidth can sustain the bitrate that resolution demands. The result: an over-specced output that constantly buffers, when a 720p 60fps stream at the same connection would have looked clean.

The principle: pick the highest resolution and frame rate your sustained upload can support at the correct bitrate, not the highest your encoder can produce. A clean 720p 60fps stream out-performs a buffering 1080p 60fps stream on every viewer-experience metric.

The decision tree: if your sustained upload is below the threshold for 1080p 60fps, drop to 1080p 30fps or 720p 60fps. If still tight, drop to 720p 30fps. The viewer's brain reads "smooth motion" first and "high resolution" second. Frame rate consistency wins over resolution every time.

The exact bitrate-to-resolution pairings are in Module 4. Make the decision once. Lock the output. Move on.