Using a 0 Delay GRF is a violation of the rules on most official and established private servers.
can be executed as fast as the player's connection and ASPD allow, bypassing the "hard" animation delay that typically limits their frequency. Performance Ragnarok 0 Delay Sprite Grf
Obtain your 0_delay.grf or sprite_optimization.grf from a trusted source and extract it to your desktop. 2. Backup Your Client Using a 0 Delay GRF is a violation
Classes like Snipers or Creators can cycle through skills more rapidly because the client isn't bogged down by rendering complex frames. Ragnarok 0 Delay Sprite Grf
When combined with (often via DLL injection or hexed clients), these GRFs make skills cast instantly with no after-cast delay visually – though server-side delays often remain unless the server allows it.