Microsoft's Windows K2 overhaul is bringing significant performance improvements to File Explorer by migrating from WinUI 2 to WinUI 3. Benchmarks show 41% fewer allocations, 63% fewer transient allocations, 45% fewer function calls, and a 25% reduction in time spent in WinUI code. The changes are expected to ship to Windows 11 users soon from the development branch.
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And it's all thanks to WinUI 3738 Impressions