You need the Update 1.0.2 specifically bundled with the title.key that matches the Rebuilt NSP. Here is the checksum theory (do not use illegal hash sites, but verify your file structure):
The base game struggled to maintain a consistent 30 frames per second (FPS), especially in handheld mode or during chaotic police chases. Patched updates introduce better dynamic resolution scaling, keeping the gameplay much smoother. 3. Game-Breaking Bug Fixes lego city undercover switch nsp update patched
Occasional software errors that forced game restarts. You need the Update 1