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Fixes a Mutex Issue Preventing Some UE Titles From Booting - #451

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Spooks4576 merged 2 commits into
sharpemu:mainfrom
Spooks4576:main
Jul 19, 2026
Merged

Spooks4576 merged 2 commits into
sharpemu:mainfrom
Spooks4576:main

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@Spooks4576

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Summary

  • Improves guest import, memory, and pthread performance while fixing UE games stuck in adaptive mutex self-lock loops.
  • Preserves the latest upstream mutex handoff and CPU compatibility changes.
  • Validation: 504 tests passed; Squirrel with a Gun successfully presents a Vulkan frame.

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📦 Build artifacts — 257789a

Platform Download
Windows (win-x64) sharpemu-win-x64-e0b2637
Linux (linux-x64) sharpemu-linux-x64-e0b2637
macOS (osx-x64) sharpemu-osx-x64-e0b2637

From build run #1006. Downloads require a GitHub login and expire after 90 days.

@Spooks4576

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🎮 SharpEmu gameplay test results

PASSED — no gameplay regressions detected.

Tested main @ 257789a6 — 60 seconds of automated gameplay per game on real GPU hardware (Linux).

Game Result
Dreaming Sarah ✅ passed
Dead Cells ✅ passed

Failure reasons, gameplay recordings & evidence bundles: https://pr.sharpemu.app/#pr-451

This comment is updated automatically whenever the PR is retested.

@Spooks4576
Spooks4576 merged commit 90c72eb into sharpemu:main Jul 19, 2026
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