When the Fontself extension starts lagging, this can be due to a couple factors: either your font glyphs contain too many points, or Illustrator needs a refresh.

  • If your glyphs contains complex shapes (like hundreds of points each), you might want to simplify your objects' paths to save memory.
  • If you've been working for a while with Fontself, it may happen that some of Illustrator's internal processes (called CEPHtmlEngine) eat up too much memory. In this case, quit Illustrator & check that no CEPHtmlEngine additional process is running in your Activity Monitor (on macOS) or Task Manager (on Windows) - just mind that other Adobe apps may also run their own CEPHtmlEngine processes.
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