Slate performance can be a huge concern for UI-heavy projects, and it's often difficult to tell where exactly to make optimizations.
Slate Global Invalidation provides a healthy performance boost in many cases, but how can you be sure it's working properly? And what do you do when it fails?
Watch this session recorded at Unreal Fest Chicago 2026 for a deep dive into UI performance, from the history of Slate itself to a thorough analysis of the Slate Tick using Unreal Insights. We break down the different parts of the Slate Tick, explore the various reasons your widgets may invalidate, and equip you with the knowledge you need to make smart decisions about where to focus your optimization efforts.
Find out more about using Unreal Engine to develop games here: unrealengine.com/uses/games
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