RetroArch PSP Latency: A Comprehensive Guide

When it comes to retro gaming on your PSP, latency can be a significant issue. Fortunately, RetroArch has several features that can help minimize input lag and provide a more responsive gaming experience.

Selecting Individual CG Files or Presets

If you want to use individual CG files, you'll need to increase the Shader Passes in RetroArch's settings. This will allow you to select a specific CG file through Shader #0 (or #1, #2, etc.). Alternatively, you can load a preset shader like CRT-Royale or Super-XBR by selecting Load Shader Preset under Shader Options and choosing a CGP file.

Understanding Shaders

Shaders in RetroArch usually come in two forms: single CG files or a group of files controlled by a CGP preset file. Once you've loaded your game, you can access the Core Options menu to make changes to shader settings, input options, cheats, and more.

Editing Core Options

To edit core-specific options or settings, you'll need to start a game with that core enabled. This will allow you to customize settings like input lag compensation, frame delay, and more. Note that some cores may require specific BIOS files or system files to function properly.

Configuring Input Latency

RetroArch offers several options for decreasing input latency related to vsync. These include eliminating buffering by the video driver and using frame delay to delay polling of inputs until just before a vsync occurs on the display.

Netplay and Real-Time Rewind

The PSP version of RetroArch also supports GGPO-like netplay (latency hiding rollback) and real-time rewind, which allows you to rewind gameplay in real-time. This feature is especially useful for competitive gamers who need to quickly review and correct mistakes.

Additional Features

RetroArch on the PSP also includes support for audio DSP filter plugins, pixel shaders using Cg and GLSL (with HLSL on Xbox 360), dynamic rate control for smooth audio and video, custom resolution and refresh rate options, and more. Additionally, the application supports serialization of emulation state, which enables real-time rewind and netplay.

RetroArch is a powerful and feature-rich emulator that can help you reduce input latency and provide a more responsive gaming experience on your PSP. With its support for various systems, shaders, and features like GGPO-like netplay and real-time rewind, it's an essential tool for any retro gaming enthusiast.

Retroarch psp latency