Plugins like (found in RetroArch) or specialized video output plugins reduce the delay between pressing a button and seeing the action on screen. In fast-paced games like Street Fighter II , these milliseconds are the difference between a win and a loss. The "Cool" Factor

Depending on your project, you’ll likely be looking for a plugin that falls into one of these three categories: 1. Video Signal & Refreshrate Management

If you want your "Start" button to blink when a credit is inserted, you need an output plugin.