Uploaded June 2026 | Updated September 2026, 2 weeks ago
⚙️ Performance debugging is slow because you're doing the science manually – forming hypotheses, recording traces, comparing results. AI can do all of that for you.
One prerequisite: Chrome DevTools MCP. Without it, Claude doesn't know what it doesn't know.
What's inside:
💫 How Git bisection finds the exact commit that broke performance – automatically
💫 How to build isolated stress tests that make invisible bugs obvious
💫 Why "explain my options" beats "fix this" every time
🎙️ Bernie Sumption – Engineer at AG Grid, specialising in theming and rendering performance. "The other engineers make it work fast and well, I make it look pretty" – and apparently, make AI do the hard debugging work too.
Connect with Bernie:
👉 github.com/BernieSumption
👉 linkedin.com/in/berniesumption
Learn more about AG Grid:
👉 ag-grid.com
📝 Talk: Debugging Performance With AI | Bernie Sumption
This talk was recorded at JSNation Amsterdam 2026:
🔗 jsnation.com/?utm_source=youtube&utm_medium=BernieSumption
📌 Follow the link to watch the full version of all the conference talks, QnA’s with speakers and hands-on workshop recordings:
🔗 gitnation.com/events/jsnation-2026?utm_source=youtube&utm_medium=BernieSumption
🕐 Timestamps:
00:00 - Why Performance Debugging Feels Like Guesswork
00:44 - You've Been Doing Science Manually This Whole Time
02:24 - Two Things Bernie Wants You to Actually Remember
03:06 - AI Profiled 50 Commits While He Had Lunch
04:02 - Strip the Noise: Standalone Reproduction
04:38 - 100,000 Divs to Make an Invisible Bug Obvious
🚀 The most honest conversations happen after the talk. Join the next conferences by GitNation to sync with the engineers actually shipping the future:
💫 AI Coding Summit 2026 (London & Online)
aicodingsummit.com/?utm_source=youtube&utm_medium=BernieSumption
💫 JSNation US 2026 Nov 16 & 19, 2026 (NewYork & Online)
🔗 jsnation.us/?utm_source=youtube&utm_medium=BernieSumption
💫 React Summit US 2026 Nov 17 & 20, 2026 (NewYork & Online)
🔗 reactsummit.us/?utm_source=youtube&utm_medium=BernieSumption
and more!
🚀 Check out all the upcoming events from GitNation:
🔗 gitnation.com/events?utm_source=youtube&utm_medium=BernieSumption
#GitNation #JSNation #JSNationConference #JavaScript #TypeScript #WebDev #WebPerformance #FrontendDevelopment #Frontend #PerformanceDebugging #ChromeDevTools #ChromeDevToolsMCP #AIDebugging #MCPTools #GitBisect #RenderingPerformance #AGGrid #ClaudeAI #AIforDevelopers #DeveloperTools #DevTools #SoftwareEngineering #Programming #CodingTips #LearnToCode #TechTalks #ConferenceTalk #OpenSource
⚙️ Performance debugging is slow because you're doing the science manually – forming hypotheses, recording traces, comparing results. AI can do all of that for you.
One prerequisite: Chrome DevTools MCP. Without it, Claude doesn't know what it doesn't know.
What's inside:
💫 How Git bisection finds the exact commit that broke performance – automatically
💫 How to build isolated stress tests that make invisible bugs obvious
💫 Why "explain my options" beats "fix this" every time
🎙️ Bernie Sumption – Engineer at AG Grid, specialising in theming and rendering performance. "The other engineers make it work fast and well, I make it look pretty" – and apparently, make AI do the hard debugging work too.
Connect with Bernie:
👉 github.com/BernieSumption
👉 linkedin.com/in/berniesumption
Learn more about AG Grid:
👉 ag-grid.com
📝 Talk: Debugging Performance With AI | Bernie Sumption
This talk was recorded at JSNation Amsterdam 2026:
🔗 jsnation.com/?utm_source=youtube&utm_medium=BernieSumption
📌 Follow the link to watch the full version of all the conference talks, QnA’s with speakers and hands-on workshop recordings:
🔗 gitnation.com/events/jsnation-2026?utm_source=youtube&utm_medium=BernieSumption
🕐 Timestamps:
00:00 - Why Performance Debugging Feels Like Guesswork
00:44 - You've Been Doing Science Manually This Whole Time
02:24 - Two Things Bernie Wants You to Actually Remember
03:06 - AI Profiled 50 Commits While He Had Lunch
04:02 - Strip the Noise: Standalone Reproduction
04:38 - 100,000 Divs to Make an Invisible Bug Obvious
🚀 The most honest conversations happen after the talk. Join the next conferences by GitNation to sync with the engineers actually shipping the future:
💫 AI Coding Summit 2026 (London & Online)
aicodingsummit.com/?utm_source=youtube&utm_medium=BernieSumption
💫 JSNation US 2026 Nov 16 & 19, 2026 (NewYork & Online)
🔗 jsnation.us/?utm_source=youtube&utm_medium=BernieSumption
💫 React Summit US 2026 Nov 17 & 20, 2026 (NewYork & Online)
🔗 reactsummit.us/?utm_source=youtube&utm_medium=BernieSumption
and more!
🚀 Check out all the upcoming events from GitNation:
🔗 gitnation.com/events?utm_source=youtube&utm_medium=BernieSumption
#GitNation #JSNation #JSNationConference #JavaScript #TypeScript #WebDev #WebPerformance #FrontendDevelopment #Frontend #PerformanceDebugging #ChromeDevTools #ChromeDevToolsMCP #AIDebugging #MCPTools #GitBisect #RenderingPerformance #AGGrid #ClaudeAI #AIforDevelopers #DeveloperTools #DevTools #SoftwareEngineering #Programming #CodingTips #LearnToCode #TechTalks #ConferenceTalk #OpenSource
