diff --git a/src/server/scraper/engine.ts b/src/server/scraper/engine.ts
index 0eb3d31..9775e17 100644
--- a/src/server/scraper/engine.ts
+++ b/src/server/scraper/engine.ts
@@ -161,6 +161,9 @@ export async function searchStreaming(
     stores: stores.map((s) => ({ id: s.id, name: s.name, renderJs: !!s.render_js })),
   });
 
+  // Yield to event loop so the SSE start event flushes to client
+  await new Promise((r) => setTimeout(r, 0));
+
   const limit = pLimit(MAX_CONCURRENCY);
   const errors: SearchResult['meta']['errors'] = [];
   let totalResults = 0;
@@ -193,6 +196,9 @@ export async function searchStreaming(
           resultCount: products.length,
           duration,
         });
+
+        // Yield so SSE event flushes to client
+        await new Promise((r) => setTimeout(r, 0));
       } catch (err) {
         const duration = Date.now() - storeStart;
         const errorMessage = err instanceof Error ? err.message : String(err);