We are still observing this issue in the macOS 26.2 beta releases. DXO has also reported encountering similar problems, as noted in their PhotoLab 9 release notes: https://download-center.dxo.com/Support/docs/PhotoLab_v9/release-notes/PL9_release-note_mac_EN.pdf . Fortunately, they can continue using the GPU path. The only guidance we have received from Apple so far is to switch to the CPU path, which is not a viable solution for most performance-critical workflows. We also attempted to use the diagnostic tool provided by Apple to help identify these issues https://github.com/apple/coremltools/releases/tag/8.3. It fails inconsistently, producing system-level semaphore errors that cause the Python interpreter to crash.