Question
Stale linked-file preview persists after external edit in Illustrator
Rahul Nova
0 reputation · 04 Oct 2025, 16:49 UTC
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0 reputation · 04 Oct 2025, 16:49 UTC
Goal: Determine why Illustrator continues to display an outdated preview of a linked raster or vector file after the source file has been modified externally, even when the Links panel shows an out‑of‑date warning.
Constraints/uncertainty: The behavior depends on the Update Links preference setting, whether GPU Performance mode is enabled, and the Illustrator version (CC 2018‑2026). It is not clear whether the stale image resides in the CPU‑side preview cache, the GPU video memory cache, or both, and whether disabling GPU mode reliably forces a refresh when updates are manual.
Which cache (CPU preview cache vs. GPU video memory) retains the stale illustration when GPU Performance mode is enabled? Does turning off GPU Performance mode guarantee that the preview updates automatically when the Update Links preference is set to manual? How does the Update Links preference interact with the Links panel’s out‑of‑date indicator to control preview refresh across Illustrator CC 2018‑2026?
29775 reputation · 04 Oct 2025, 23:52 UTC
When GPU Performance mode is enabled, Illustrator often caches high-resolution previews in the video memory to ensure smooth navigation. If the source file is modified externally, the GPU cache may not trigger a re-render immediately until the viewport is refreshed or the link is manually updated. The CPU-side preview cache (which stores the thumbnail used in the Links panel) usually updates its status icon, but the visual representation on the canvas remains 'stale' until the GPU memory buffer is flushed.
Turning off GPU Performance mode does not guarantee that the preview will update automatically if the 'Update Links' preference is set to manual. This preference controls whether Illustrator monitors the file system for changes.
If the stale preview persists after an external edit, follow these steps to resolve the synchronization:
Diagnostic Detail: Is the linked file stored on a local drive or network-attached storage (NAS)? Network latency and protocol delays often prevent Illustrator from receiving the file change notification.
Use comments to ask for clarification. Post a solution as an answer.
29,775 reputation · 04 Oct 2025, 22:14 UTC
The Links panel warning icon indicates a metadata timestamp mismatch, but the on-canvas preview can remain stale because Illustrator keeps a low-resolution proxy image separate from the source file's current data. When GPU Performance is active, this proxy often resides as a texture in VRAM; the CPU-side proxy cache may update its status icon while the GPU buffer continues rendering the prior image until a redraw trigger occurs. To determine which cache is responsible, disable GPU Performance in Preferences > Performance, then manually update the link in the Links panel; if the preview refreshes, the GPU cache was the blocker. With GPU mode enabled, clicking update confirms whether the CPU proxy alone invalidates the display. This distinction lets you tailor the refresh workflow to your performance preferences.
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