BizHawk Setup:
Games can only run under the cue format.
• Config > Speed/Skip > Audio Throttle
If you're using the Octoshock core
• PSX > Options
• Select either mednafen mode option
To verify that you are running with Audio Throttle enabled you must hit the increase/decrease speed keys [plus/minus] it will display a message on screen.

DuckStation Dedicated Rules:
You must be using the NoGUI version, that means a keybind for Quick Menu is required.
These settings can be set in the Qt version of DuckStation.
You must show settings of the core settings before/after the run.
Your settings must match this:
Interface Menu (NoGUI Setting)
• Pause On Menu: Disabled
BIOS Settings
• Fast Boot: Disabled
Console Settings
• 8MB RAM: Disabled
• CPU Emulation - Execution Mode: Interpreter (Slowest)
• No change in Clock Speed
• CD-ROM Emulation to remain on defaults
• Async Readahead: Disabled (Synchronous)
• Read/Seek speedump set to None (Normal Speed)
• Preload Image to RAM: Disabled
• Apply Image Patches: Disabled
Emulation Settings
• Emulation Speed set to 100%
• Runahead: Disabled
Display Settings
• Auto (Game Native) or 4:3
• Cropping overscan is allowed
Enhancement Settings
• Widescreen Hack: Disabled
• Force NTSC Timings: Disabled
• Recommended: Keep PGXP Disabled
Custom settings are allowed for anything that isn't mentioned such as internal resolution scale.
We would allow enabling "Show Enhancement Settings" to simplify the end user side, however some of the settings do not appear if they're enabled.