Fix Word for Mac Text-to-Speech Slow or Unresponsive in Big Sur
Question details
Users report significant lag or complete unresponsiveness when using the text-to-speech feature in Microsoft Word for Mac, especially on macOS Big Sur with large documents.
- Product
- Microsoft Word for Mac
- Device & OS
- macOS Big Sur
- Scenario
- Using the macOS text-to-speech feature to read aloud Word documents that are 500 KB or larger.
- Observed behavior
- The text-to-speech function becomes extremely slow or stops working entirely. In some cases, the speech audio continues playing even after Microsoft Word has been completely closed.
Verify that your macOS is fully updated to the latest available patch for Big Sur, and test the text-to-speech function in a built-in app like TextEdit to confirm if the issue is system-wide.
Report the Issue to Apple Support and Microsoft
Because text-to-speech is a system-level macOS feature rather than a standalone Word function, resolving this bug requires updates from Apple and Microsoft.
The text-to-speech engine on Mac is provided directly by macOS. When it malfunctions with specific third-party applications like Microsoft Word, it typically indicates a compatibility bug between the macOS audio service and the app's memory management.
Reach out to Apple Support or consult the Apple Community forums. Report that the macOS Big Sur speech engine is hanging or running indefinitely when processing large text files.
Open Microsoft Word, click on 'Help' in the top menu bar, and select 'Feedback' or 'Provide Feedback'. Choose 'I don't like something' to report the bug.
In your feedback report, ensure you include your specific macOS version, Word version, the approximate document size (e.g., over 500 KB), and steps to reproduce the lag.
Change the System Spoken Content Voice
Switching the default macOS voice can occasionally bypass corrupted voice files or specific voice-engine bugs causing the lag.
Try WPS Office for a Smoother Document Experience on Mac
If Microsoft Word for Mac continues to struggle with performance issues or system glitches on macOS Big Sur, consider switching to WPS Office. It provides a highly compatible, fast, and free alternative with excellent performance on Apple devices.
- 1. Download the App: Visit the official WPS website and download the macOS version of WPS Office.
- 2. Install and Launch: Run the installer package and drag WPS Office into your Applications folder, then launch it.
- 3. Open Your Document: Open your large .docx files seamlessly and enjoy a stable reading and editing experience.
Frequently Asked Questions
Why does text-to-speech keep playing after I close Word for Mac?
Because the text-to-speech engine is a built-in macOS system service, a communication glitch between Word and the operating system can cause the speech service to continue running in the background even after the application requesting it has been closed.
How can I quickly stop the speech if it becomes unresponsive?
You can usually stop unresponsive text-to-speech by pressing the designated system keyboard shortcut (often Option + Esc). If that fails, you may need to open Activity Monitor, locate the 'SpeechSynthesisServer' process, and force quit it, or simply restart your Mac.
Does document size affect text-to-speech performance on macOS?
Yes, large documents (typically those around 500 KB or larger with extensive text) require more memory allocation to process the text queue. On certain macOS versions like Big Sur, this can overwhelm the background service, leading to noticeable delays or freezing.
