"A Frame's Life" is now available as an article, jam-packed with GIFs and extra information I couldn't fit into the video presentation! dev.epicgames.com/community/le...

A Frame's Life: Frame Timing, Synchronization, and Latency in UE | Tutorial

Every frame in Unreal Engine goes on a long journey before reaching the screen. In this talk, we’ll walk through that journey from gameplay code throug...

dev.epicgames.com

"A Frame's Life", my presentation about frame pacing, input latency, and jitter in UE, is live right now! www.youtube.com/watch?v=dKSH...

A Frame’s Life: Frame Timing, Synchronization, and Latency in UE | Unreal Fest Chicago 2026

YouTube video by Unreal Engine

youtube.com

Had a great panel on "Optimizing Optimization" with Ken Noland, Simon Barrat, and Dan Wood at @developconference.com. "Hi from Brighton!" 👋

Had a great time in England teaching the Brits about frame pacing and input latency in Unreal. "Hi from Brighton!" 👋

Super happy with a full room of devs interested in improving frame pacing and input latency in their games at Unreal Fest 🙌 "Hi from Chicago!" 👋

Avast mateys! Profiling with Pirates, @flassari.bsky.social and I's session from #UnrealFest Chicago is already live on YouTube! Thanks again to @limbicgames.bsky.social for letting us profiling your game and talk about it live on stage! www.youtube.com/watch?v=CYvL...

Profiling with Pirates: Performance Plundered from a Real Game | Unreal Fest Chicago 2026

YouTube video by Unreal Engine

youtube.com

I've found that a released game's technical performance often correlates with how many people on the team are solely or mostly focused on profiling and optimizing.

Polly the Profiling Parrot helped me and Captain @mattoztalay.bsky.social realize that the true treasures are well optimized games! Hi from Chicago! 👋🦜🏴‍☠️

Arrrrrrii!! What have ye done?

Ari Arnbjörnsson@flassari.bsky.social · 2mo ago

Hey, Captain @mattoztalay.bsky.social! I just traded our pirate ship for this magical parrot that should be able to lead us to amazing riches! What a bargain! Apparently, we're supposed to find the treasure at something called "Unreal Fest Chicago" next week.

Hey, Captain @mattoztalay.bsky.social! I just traded our pirate ship for this magical parrot that should be able to lead us to amazing riches! What a bargain! Apparently, we're supposed to find the treasure at something called "Unreal Fest Chicago" next week.

What's this? Info on Unreal's next-generation terrain solution? 👀 Full 3D, enabling overhangs and tunnels?! Multi-user non-destructive modifiers, and it can still import heightfields?! Both Nanite and trad LODs 🤯 dev.epicgames.com/community/le...

We've added two extra hitch types to The Great Hitch Hunt article: "UI Widget Hitch" and "Text Hitch", written by my coworker @codyjero.me. Go check it out! dev.epicgames.com/community/le...

The Great Hitch Hunt: Tracking Down Every Frame Drop | Tutorial

Hear ye, developers! A scourge plagues our beloved industry. Grab your pitchforks and rally with Ari “the Hitch Hunter” Arnbjörnsson as he arms you with...

dev.epicgames.com

This week marks my five-year anniversary at Epic Games! 🎉 Thank you to my lovely coworkers and to all the UE devs out there who make my job such a blast! Keep making amazing games everyone! 🤘

When Unity started collapsing I made a quick "how do I get going in Unreal" website many folks found helpful. that website has now MOVED and is a DIFFERENT COLOUR. If you want Unreal demystification, tips and scoops, this is a place www.ughiguessiwanttomovefromunitytounreal.com

I keep seeing people using the old UE logo to advertise their game/product. We updated it quite a while ago (the U is rounder now.) You can just download the high-res logo from unrealengine.com/branding, don't get it from Google Images 😬

Awesome video where @doublefine.com show you their in-engine Unreal workflows 😍 #uetips www.youtube.com/watch?v=VMa5...

In-Engine · Double Fine's Keeper - Unreal 5 Exploration

YouTube video by Double Fine

youtube.com

That's how you get zero stutters in your game. You're welcome, game industry. #uetips

The text version of "Profiling with Purpose: Performance Lessons from a Real Unreal Project" is up! Check it if you, like me, prefer text/images over videos for learning. #uetips dev.epicgames.com/community/le...

Profiling with Purpose: Performance Lessons from a Real Unreal Project | Tutorial

How does Epic Games’ Technical Developer Relations team profile games? Watch this session recorded at Unreal Fest Stockholm and learn our optimization...

dev.epicgames.com

"Clair Obscur was 95% Blueprints" I've been eagerly waiting for this talk to be uploaded, great job Tom and team 💪 youtu.be/t1CrbTx6O6w?...

The Technical Journey of Clair Obscur: Expedition 33 | Unreal Fest Stockholm 2025

YouTube video by Unreal Engine

youtu.be

I gave a talk on Slate in Unreal Engine as part of JetBrains GameDev Day, and the individual video is now up! https://www.youtube.com/watch?v=1n3oIfI7nBM #UnrealEngine

I'll be presenting with the awesome @highlyspammable.bsky.social at the GDC26!! Come say hi :D Developing Large Procedural Systems with Low Friction and Fast Generation (Presented by Epic Games) #GDC2026 #PCG #UE schedule.gdconf.com/session/deve...

Developing Large Procedural Systems with Low Friction and Fast Generation (Presented by Epic Games) | Agenda | GDC Festival of Gaming

The GDC Festival of Gaming program blends expert insight with interactive formats designed to spark ideas, sharpen skills, and connect communities.

schedule.gdconf.com

Super early birds get the worms. The discount worms 🪱 200 worms! Or I mean, they get to not have those worms. Uhm... Anyway, cheap tickets! 😅 Super-early bird pricing at $200 off for Unreal Fest Chicago are now available: unrealengine.com/events/unreal-fest-chicago-2026

The deadline for submitting talks for Unreal Fest Chicago is this Thursday, Jan 22nd! ⏱️

Ari Arnbjörnsson@flassari.bsky.social · 8mo ago

Unreal Fest 2026 is coming to Chicago next June, and I want YOU to present there! Call for proposals is open until January 22nd, speakers get free hotel accommodation and conference tickets 🤘 Apply here: unrealengine.com/news/apply-to-present-at-unreal-fest-chicago-2026 I hope to see you there!

Check out all the recent work that's been done to make async loading UObjects in the editor a reality. You can give it a try in 5.7: dev.epicgames.com/community/le...

Mastering Async Loading in Unreal Engine | Knowledge base

This tutorial explains how async loading works and how to best leverage it.

dev.epicgames.com

Conferences can be super busy; it can be hard to find the time to eat dinner. Fun fact: hors d'oeuvres can be a dinner if you just eat enough of them! 🤯 Pic related: me gobbling down finger food while the other person talks.

My coworker Zhi Kang Shao just published the Level Streaming Hitching Guide, a huge resource on the things you can do to prevent hitches during level streaming. Read it here: dev.epicgames.com/community/learning/tutorials/qpll/unreal-engine-level-streaming-hitching-guide

Level Streaming Hitching Guide | Tutorial

Guide to recognizing common level streaming hitches in your Unreal Insights captures and tips and links to resources to address them. Hitches refers to ...

dev.epicgames.com

Unreal Fest 2026 is coming to Chicago next June, and I want YOU to present there! Call for proposals is open until January 22nd, speakers get free hotel accommodation and conference tickets 🤘 Apply here: unrealengine.com/news/apply-to-present-at-unreal-fest-chicago-2026 I hope to see you there!

Another one for my #UnrealEngine required reading list: dev.epicgames.com/community/le...

Level Streaming Hitching Guide | Tutorial

Guide to recognizing common level streaming hitches in your Unreal Insights captures and tips and links to resources to address them. Hitches refers to ...

dev.epicgames.com

"Mafia: The Old Country: Using MetaHuman in a AAA Character Pipeline" is a fantastic talk on Hangar 13's use of MetaHuman for their amazing-looking characters! 🤩 Watch it here: youtube.com/watch?v=V8rL1r_1IcQ

Ari and I both said a lot of words on stage at #UnrealFest Stockholm, and I think these are the most important. How to think about profiling, how to read the unicorn barf that is Unreal Insights, and tips for looking at GPU captures.

Ari Arnbjörnsson@flassari.bsky.social · 8mo ago

How do we profile games at Epic Games? Check out this presentation where @mattoztalay.bsky.social and I examine perf captures from Arctic Hazard's "NORSE: Oath of Blood" and show you how to use Unreal Insights and PIX. www.youtube.com/watch?v=C-Aj...