diff --git a/index.html b/index.html
index 455d6a6..2f795bf 100644
--- a/index.html
+++ b/index.html
@@ -84,7 +84,7 @@
       const networkTableBody = document.querySelector('#network-table tbody');
       const networkDetail = document.querySelector('#network-detail');
       const networkDetailEditor = new JSONEditor(networkDetail, {})
-      const networkDetailDelaySeconds = 5;
+      const networkDetailDelaySeconds = 2;
       let networkBucket = null;
 
       function onNewNetworkData(raw) {
@@ -95,7 +95,7 @@
 
         networkBucket = {};
         for (const record of records) {
-          const key = Math.round((record.timestamp - startTimestamp) / 1000);
+          const key = Math.floor((record.timestamp - startTimestamp) / 1000);
           const bucket = networkBucket[key] || [];
           bucket.push(record);
           networkBucket[key] = bucket;
@@ -149,7 +149,9 @@
       function networkOnSeek(elapsed) {
         const rows = [];
 
-        for (let currentTime = elapsed - networkDetailDelaySeconds; currentTime <= elapsed; currentTime++) {
+        const elapsedStart = elapsed - networkDetailDelaySeconds / 2;
+        const elapsedEnd = elapsed + networkDetailDelaySeconds / 2;
+        for (let currentTime = elapsedStart; currentTime <= elapsedEnd; currentTime++) {
           const records = networkBucket[currentTime] || [];
           for (let recordIdx = 0; recordIdx < records.length; recordIdx++) {
             const record = records[recordIdx];
diff --git a/index.js b/index.js
index 50d4d4c..092092b 100644
--- a/index.js
+++ b/index.js
@@ -8,14 +8,16 @@ const fs = require('fs');
 if (process.argv.length != 3) {
   console.error(`Usage: ${process.argv[0]} ${process.argv[1]} <url>`);
   process.exit(1);
-} 
+}
 
 const url = process.argv[2];
 
 (async () => {
   const browser = await puppeteer.launch({
-    headless: false, devtools: false, defaultViewport: null, args: [
+    headless: false, devtools: true, defaultViewport: null, args: [
       "--start-fullscreen",
+      "--use-gl=angle",
+      "--use-angle=gl"
     ]
   });
   const page = await browser.newPage();
@@ -26,9 +28,6 @@ const url = process.argv[2];
   await page.setUserAgent(customUA);
 
   page.on('response', async response => {
-    if (response.timing() === null) {
-      return;
-    }
     const timestamp = Date.now();
     const timing = response.timing();
     const requestUrl = response.url();
@@ -55,10 +54,26 @@ const url = process.argv[2];
     });
   });
 
-  const recorder = new PuppeteerScreenRecorder(page);
+  const recorder = new PuppeteerScreenRecorder(page, {
+    followNewTab: true,
+    fps: 30,
+    ffmpeg_Path: null,
+    videoFrame: {
+      width: null,
+      height: null,
+    },
+    videoCrf: 30,
+    videoCodec: 'libx264',
+    videoPreset: 'ultrafast',
+    videoBitrate: 1000,
+    aspectRatio: '16:9',
+  });
   const reportName = `report_${new Date().toUTCString()}`;
+  const recorderStart = Date.now();
   await recorder.start(`${reportName}.mp4`); // supports extension - mp4, avi, webm and mov
   const startTimestamp = Date.now();
+
+  console.log(`Recorder start delay: ${startTimestamp - recorderStart}ms`)
   console.log(`Going to ${url}`)
   page.goto(url);