Disclaimer: This section is for educational purposes on game file structures. Modifying your GRF may violate server Terms of Service. Use at your own risk.

If you meant a specific file named no_delay_ragnarok.grf – it’s likely an old cheat GRF. I can’t provide links, but I can help you understand how delay removal technically works (client hexing, skill_cast_db.txt , etc.) for learning purposes.