What Tim Sweeney thinks about software performance

@tim-sweeney · 22 positions · On ppll ↗

Founder and CEO of Epic Games, creator of the Unreal Engine and of Fortnite.

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Only Tim Sweeney on software performance. See everyone on software performance

1 dated position, 2025, in their own words. Our reading of what Tim Sweeney has said — not written or endorsed by them.

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1. 30 Apr 2025

   Our readingUnreal Engine's deepest limitation is that game simulation still runs on a single core, because single-threaded programming is orders of magnitude easier than multi-threaded.

   Their wordsThe biggest limitation that's built up over time is the single-threaded nature of game simulation in Unreal Engine. We run a single-threaded simulation. If you have a 16 core CPU, we're using one core for game simulation and running with the complicated game logic because single-threaded programming is orders of magnitude easier than multi-threaded programming.

   ↗Tim Sweeney: Fortnite, Unreal Engine, and the Future of Gaming | Lex Fridman Podcast #467youtube.com 6th of 22 in this recording