Fix Slow Fill and Sign Text Entry in Acrobat on M1 Mac
Question details
The user is experiencing severe text input lag and dialog box flickering when attempting to use the Fill and Sign tool in a PDF document.

- Product
- Adobe Acrobat
- Device & OS
- Mac Mini with Apple M1 chip, macOS Big Sur
- Scenario
- Typing text into a PDF document using the Fill and Sign feature.
- Observed behavior
- Text appears very slowly, often one character at a time, and the dialog box may flicker continuously during text entry.
Ensure your macOS Big Sur is fully updated to the latest minor version, as Apple frequently releases performance patches for M1 compatibility, and save your current PDF to avoid data loss.
Run Acrobat in Native Mode or Toggle Rosetta 2
Switching between Apple Silicon's native mode and the Rosetta 2 emulation can quickly resolve rendering and performance lags in older Adobe applications.
Early versions of Adobe Acrobat running on M1 chips relied heavily on Apple's Rosetta 2 translation environment. Depending on your specific app version, forcing the app to open natively or deliberately using Rosetta can bypass UI flickering and slow text inputs.
Close the Acrobat application. Open Finder and navigate to your 'Applications' folder to locate the Adobe Acrobat app icon.
Right-click (or Control-click) the Adobe Acrobat application icon and select 'Get Info' from the context menu.
Look for the checkbox labeled 'Open using Rosetta' under the General section. If it is checked, uncheck it to force Native mode. If it is unchecked, check it to try Emulation mode. Relaunch Acrobat and test the Fill and Sign tool.

Update Acrobat and Test a Different PDF
Installing the latest software updates and isolating the document can determine if the lag is a software bug or a corrupted PDF file.
Rebuild Acrobat Preferences
Resetting the application's preferences can clear out corrupted temporary data causing the dialog box to flicker.
Use WPS Office for Lag-Free PDF Filling on M1 Macs
If Acrobat continues to lag on your Mac Mini, switch to WPS Office. The built-in WPS PDF tool offers highly optimized performance on macOS, ensuring that filling out forms, adding signatures, and typing text is instant and flicker-free.
- 1. Open your PDF in WPS Office: Launch WPS Office on your Mac and drag and drop your PDF file into the workspace to open it.
- 2. Access the Fill & Sign Tools: Navigate to the top toolbar, click on the 'Edit' or 'Comment' tab, and select the 'Text Box' or 'Fill & Sign' feature.
- 3. Type Without Lag: Click anywhere on your document to place the text cursor and type your information smoothly. Save the completed PDF when finished.

Frequently Asked Questions
Why does Adobe Acrobat run slowly on my M1 Mac?
Older builds of Adobe Acrobat were originally designed for Intel processors. On Apple Silicon (M1) Macs, these applications run through a translation layer called Rosetta 2, which can occasionally cause performance bottlenecks such as UI flickering and text input lag.
Will updating macOS Big Sur fix PDF text flickering?
Yes, Apple regularly releases performance and stability patches for M1 chips. Updating your macOS to the latest version can often resolve graphics rendering issues that cause Acrobat dialog boxes to flicker.
Is there a faster alternative to Acrobat for filling PDFs on Mac?
Yes, WPS Office provides a robust, built-in PDF editor that runs efficiently on macOS. It allows you to seamlessly fill forms, add text annotations, and insert signatures without the heavy processing overhead that can cause lag.




