diff --git a/rtiow/src/renderer.rs b/rtiow/src/renderer.rs
index d3e6af3..dad31a8 100644
--- a/rtiow/src/renderer.rs
+++ b/rtiow/src/renderer.rs
@@ -496,22 +496,37 @@ fn render_worker(
             Ok(req) => match req {
                 Request::Line { width, y } => {
                     trace!("tid {} width {} y {}", tid, width, y);
-                    let (pixels, rays): (Vec<Vec3>, Vec<usize>) = (0..width)
-                        .map(|x| render_pixel(scene, x, y))
-                        .collect::<Vec<(_, _)>>()
-                        .into_iter()
-                        .unzip();
-                    let rays = rays.iter().sum();
-                    output_chan
-                        .send(Response::Line {
-                            y,
-                            pixels,
-                            rs: RenderStats {
-                                rays,
-                                pixels: width,
-                            },
-                        })
-                        .expect("failed to send pixel response");
+                    let batch = true;
+                    if batch {
+                        let (pixels, rays): (Vec<Vec3>, Vec<usize>) = (0..width)
+                            .map(|x| render_pixel(scene, x, y))
+                            .collect::<Vec<(_, _)>>()
+                            .into_iter()
+                            .unzip();
+                        let rays = rays.iter().sum();
+                        output_chan
+                            .send(Response::Line {
+                                y,
+                                pixels,
+                                rs: RenderStats {
+                                    rays,
+                                    pixels: width,
+                                },
+                            })
+                            .expect("failed to send pixel response");
+                    } else {
+                        (0..width).for_each(|x| {
+                            let (pixel, rays) = render_pixel(scene, x, y);
+                            output_chan
+                                .send(Response::Pixel {
+                                    x,
+                                    y,
+                                    pixel,
+                                    rs: RenderStats { rays, pixels: 1 },
+                                })
+                                .expect("failed to send pixel response");
+                        });
+                    }
                 }
                 Request::Pixel { x, y } => {
                     trace!("tid {} x {} y {}", tid, x, y);
@@ -632,7 +647,8 @@ pub fn render(scene: Scene, output_dir: &Path) -> std::result::Result<(), std::i
     }
     let time_diff = time::Instant::now() - start_time;
     info!(
-        "Summary: {}",
+        "Runtime {} seconds {}",
+        time_diff.as_secs_f32(),
         progress(&Default::default(), &current_stat, time_diff, pixel_total)
     );