This is the most common complaint. Try these fixes:
: Designed for real-time audio adjustments with minimal impact on CPU performance.
Run the installer. During installation, the window will pop up.
: Supports a virtually unlimited number of filters, which can be configured individually for different playback devices.
Click Embed in the Equalizer APO window. This locks the plugin GUI directly into the Configuration Editor layout, preventing the window from disappearing behind other applications. Troubleshooting Common Issues Issue 1: The plugin makes no difference to the sound