GPU Performance disabled warning in Preferences

GPU Preview Fallback

Adobe Illustrator utilizes the GPU Performance feature to accelerate canvas rendering, including zooming and panning. When the application detects an incompatible graphics driver or an unsupported hardware configuration, it disables this feature and triggers a warning within the Performance preferences, forcing a fallback to CPU Preview.

While this fallback ensures stability, it often results in laggy selection of complex paths and delayed redraws in documents containing high anchor point densities or embedded raster images. This creates ambiguity when attempting to determine if performance degradation is caused by hardware incompatibility or the inherent complexity of artwork.

Because Illustrator may still render specific effects or overprint previews on the CPU even when GPU Performance is active, it is difficult to isolate the exact bottleneck.

What is the most reliable method to verify if specific rendering lag is caused by the CPU fallback versus document-side complexity?

How can a user determine which elements in a view are being processed by the CPU when GPU Performance is enabled?