When looking for a 64-bit download for Magics 2003, it is important to clarify which software you are referring to, as several popular programs use the "Magic" name. Materialise Magics (3D Printing)

Final Recommendation

Do not waste hours searching for a hacked installer. Go to the official Materialise website and download the Magics 64-bit Trial. Import your largest, most corrupted STL file that crashes every other software. Watch it repair in seconds.

How to Safely Achieve a "Better" Magics 2003 Experience on 64-bit Windows

If you already own a legitimate license (dongle key), here is the optimal setup to get the performance you are searching for:

Cloud Save & Sync
Save projects to local drive or optional cloud backup (OneDrive, Google Drive, or self-hosted WebDAV).