Other PDF Issues

How to Fix Acrobat DC High Memory Usage and System Freezes

Amos GikundaAmos Gikunda Nov 3, 2026 869 views

Question details

The user is experiencing severe computer slowdowns and freezes because the PDF reader is consuming an excessive amount of system memory.

How to Fix Acrobat DC High Memory Usage and System Freezes
Product
Adobe Acrobat DC
Device & OS
not provided
Scenario
Opening, reading, or editing PDF documents.
Observed behavior
Acrobat uses abnormally high memory, causing the application to become unresponsive and freezing the entire operating system.
Before you start

Save any open documents in other applications and restart your computer to clear active memory and stop background processes before beginning the troubleshooting steps.

Solution 1Recommended

Update Acrobat and Test Document Constraints

Applying the latest software patch can fix known memory leaks, while testing with a smaller file helps identify whether the issue is caused by the software or a specific corrupted document.

Software updates often contain performance improvements and bug fixes for excessive background resource consumption.

1
Check for Updates

Open Acrobat, click on the 'Help' menu at the top, and select 'Check for Updates'. Follow the prompts to install the latest version (e.g., version 20.009.20065).

2
Test with a Local File

Close the problematic document and open a small, simple PDF saved directly on your local drive to see if the program still causes a memory spike.

Update Acrobat and Test Document Constraints
Resource Management: If the small file opens smoothly, the original PDF may be corrupted or too complex. Try closing unnecessary tabs and documents to free up RAM.

View and Edit PDFs Smoothly with WPS Office

If your current PDF reader continues to freeze your system due to high resource demands, switch to WPS PDF. It provides a lightweight, fast, and feature-rich environment to open, edit, and manage your PDF files without draining your computer's memory.

  1. 1. Download the Software: Download and install WPS Office Free from the official website.
  2. 2. Open WPS PDF: Launch the application and select the 'PDF' tab from the main dashboard.
  3. 3. Load Your Document: Click 'Open' or simply drag and drop your heavy PDF file directly into the workspace.
  4. 4. Work Without Freezes: Use the lightweight toolset to read, edit, or annotate your file smoothly without experiencing memory-related system freezes.
Lightweight performance ensuring minimal memory and CPU usageSeamless and fully compatible with Microsoft Word, Excel, PowerPoint, and Adobe PDF formatsComprehensive editing, annotation, and conversion tools built-inTabbed viewing to easily manage multiple documents without crashing
microsoft office alternative - wps office

Frequently Asked Questions

Why does my PDF reader use so much RAM?

High memory usage is typically caused by opening very large PDFs with complex graphical elements, active background plug-ins, memory leaks from outdated software versions, or corrupted application files.

How can I tell if a specific PDF is causing the freeze?

You can isolate the issue by opening a small, text-only PDF saved locally on your computer. If the application runs smoothly, the original document may be corrupted, highly complex, or hosted on a slow network drive.

Can keeping too many tabs open lead to system crashes?

Yes. Each open document consumes active system memory (RAM). Opening too many large files simultaneously can quickly exhaust your available resources, leading to severe slowdowns or a complete system freeze.