A GPU crash issue has been identified in Unreal Engine 5.5 affecting projects using Lumen and primarily on Intel hardware. The problem stems from a group barrier inside a divergent branch in ScreenProbeConvertToIrradianceCS. CL#42412951 (215041) is available to fix the issue.
https://dev.epicgames.com/community/learning/knowledge-base/6XP2/tech-note-fix-for-gpu-crash-in-lumen-in-unreal-engine-5-5