Right-click context menu takes 3–5 seconds to appear

Because the delay happens on the desktop, files, and folders, this is more likely a Windows shell or background-software conflict than a problem with one folder. First restart Windows Explorer from Task Manager and test again. Next install pending Windows updates and the current graphics, chipset, and storage drivers from the PC manufacturer. Run the built-in system repair checks from an elevated Command Prompt: first DISM /Online /Cleanup-Image /RestoreHealth, then sfc /scannow, and restart when both complete. If the delay remains, perform a clean boot and test the context menu before re-enabling startup items and non-Microsoft services in small groups. A clean boot starts Windows with essential drivers and startup programs, so a normal menu there identifies a conflicting background component. Do not remove registry entries or shell extensions blindly; isolate the component first, then update or remove only the confirmed cause