diff --git a/rtiow/renderer/src/renderer.rs b/rtiow/renderer/src/renderer.rs
index 1a11b93..fd5b356 100644
--- a/rtiow/renderer/src/renderer.rs
+++ b/rtiow/renderer/src/renderer.rs
@@ -579,7 +579,7 @@ pub fn render(scene: Scene, output_dir: &Path) -> std::result::Result<(), std::i
     let start_time = time::Instant::now();
     let (w, h) = (scene.width, scene.height);
     handles.push(thread::spawn(move || {
-        let batch_line_requests = true;
+        let batch_line_requests = false;
         if batch_line_requests {
             for y in 0..h {
                 pixel_req_tx