Programming Tutorials

  You have built a robust Electron application. Logic is sound, the architecture is modular, and the UI is modern. But the moment you attempt to load a large dataset—say, a 50MB JSON file containing logs or analytical data—the application freezes. The CSS animations halt, the loading spinner sticks, and the window becomes unresponsive for a noticeable 500ms to 2 seconds. This is the classic "IPC Jank." It is not a React issue; it is a serialization bottleneck. This post details exactly why this happens and provides a production-ready implementation to offload serialization, keeping your Renderer at 60fps. The Why: The Hidden Cost of IPC When you transmit data between the Main process and the Renderer process in Electron using  ipcMain.handle  and  ipcRenderer.invoke , you are crossing a process boundary. Under the hood, Electron uses the  Structured Clone Algorithm  to serialize JavaScript objects into a format suitable for IPC transmission (often via named...