If you have a stock CM14 or FIFAM14 editor that crashes when saving large databases, you can apply the community patch:
Even with the patched version, issues can arise.
: The patched editor fixes crashes that occur on Windows 10 and 11, specifically addressing an issue where the standard editor would cease to respond or fail to load the database entirely.
Warning: Modifying game files can violate game EULAs, cause instability, or be detected by anti-cheat in online modes. Use mods and patches at your own risk and back up files before proceeding.