Ari Arnbjörnsson
Epic Games
Ari Arnbjörnsson is a Senior Software Engineer for Developer Relations at Epic Games. He has over 18 years of games industry experience working on titles such as Angry Birds and Housemarque’s BAFTA-winning Returnal for PlayStation 5 as a lead programmer.
Ari Arnbjörnsson is speaking at the following session/s
A Frame’s Life: Frame Timing, Synchronization, and Latency in UE
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 through the game thread, render thread, RHI thread, DirectX, the GPU, and finally onto the display. We’ll explore how these stages synchronize, how frames are queued and presented, and how small decisions can add measurable latency.
By the end, you’ll have a clearer picture of frame pacing, vsync, VRR, swap chains, input delay, and Unreal’s game thread synchronization options, so you can make more informed decisions on the tradeoffs between performance and responsiveness.
Session Takeaway
The audience will learn about the many different factors that make up whether a frame makes or misses a vsync.
Session speakers
