Redshift Live Render Settings
Redshift Live is the fastest interactive rendering engine available in Redshift, offering near real time updates. The speed and interactivity of Redshift Live makes it an excellent option for look development, scene layout, architectural visualization, and light placement.
Additionally, Redshift Live is designed to match Redshift's Production rendering engine as closely as possible, making it ideal for quickly switching back and forth between the two to make the most of each engine's strengths.
The option to switch the rendering mode from Production to Live in the render settings can be found at the top of the Basic Settings section or in the Sampling tab of the Advanced Settings.