Are you working in the viewport or inside a media?
- In the Viewport: Deactivate the path tracer by clicking on the Path Tracer icon or changing the rendering mode in the Ambiance settings.
- In a Media: Temporarily change the rendering mode in the Ambiance settings while working. However, if you intend to render using the path tracer, make sure to reactivate it before rendering to ensure the media uses the correct settings.