diff --git a/examples/simulcast/main.mjs b/examples/simulcast/main.mjs
index ba80b9e5..1ca688ea 100644
--- a/examples/simulcast/main.mjs
+++ b/examples/simulcast/main.mjs
@@ -13,8 +13,8 @@ const metadata = { access_token: ACCESS_TOKEN }
 
 const sendonly = sora.sendonly(channelId, metadata, {
   audio: false,
-  videoCodecType: 'AV1',
-  videoBitRate: 3000,
+  videoCodecType: 'VP8',
+  videoBitRate: 2500,
   simulcast: true,
 })
 sendonly.on('notify', (event) => {
diff --git a/tests/simulcast.spec.ts b/tests/simulcast.spec.ts
index 592465cb..67215da5 100644
--- a/tests/simulcast.spec.ts
+++ b/tests/simulcast.spec.ts
@@ -5,6 +5,9 @@ test('simulcast sendonly/recvonly pages', async ({ page }) => {
 
   await page.click('#start')
 
+  // 安全によせて 5 秒待つ
+  await page.waitForTimeout(5000)
+
   await page.waitForSelector('#local-video-connection-id:not(:empty)')
   const localConnectionId = await page.$eval('#local-video-connection-id', (el) => el.textContent)
   console.log(`local connectionId=${localConnectionId}`)