Here is the guide to the method—the closest thing to a verified Anti-Crash mod that exists.

: An essential library used by many mods to load custom assets and manage updates . Best Practices to Prevent Crashes

Do NOT use Google Search's top result for random file hosts. Instead:

has enjoyed an incredibly long lifespan. From the days of the "White Xmas" debate to the final "City of Gold" chapter, OVERKILL’s horde shooter has remained a staple for heisting fans. However, anyone who has played Payday 2 for more than an hour knows the unspoken truth: The game crashes. A lot.

Place your chosen anti-crash .lua files or folders into the newly created mods folder.

Reduces crashes caused by desync between the host and players. Verified Status: ModWorkshop