CapCut is one of the most popular video editors, but many users experience a frustrating problem: CapCut freezes randomly during editing, sometimes for a few seconds — and sometimes it stops responding completely.

This issue can happen on both Android and iPhone, and even on low-end and mid-range devices. Below are the real causes and the best possible fixes.

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Why CapCut Freezes While Editing

CapCut can freeze due to several reasons:

1. Low RAM (Memory Limitations)

When editing large videos or using multiple layers (effects, transitions, overlays), your phone may run out of RAM — causing CapCut to freeze or lag.

2. Large or 4K Video Files

High-resolution files like 4K, 60FPS, HDR, or 10-bit are heavy and can overload mobile processors.

3. Too Many Layers or Effects

Effects such as motion blur, AI enhance, chroma key, velocity edits, etc., require high processing power.

4. Background Apps Running

Other apps (especially social media or games) running in the background eat up memory.

5. Old or Buggy CapCut Version

Sometimes a recent update introduces bugs that cause freezing.

6. Corrupted App Cache or Project Cache

Temporary files get damaged and interrupt editing.

7. Device Overheating

When your phone overheats, performance drops, and CapCut may freeze.

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How to Fix CapCut Freezes During Editing

Here are the most effective solutions that work for most users:

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1. Close Background Apps

CapCut needs as much RAM as possible.

• Clear recent apps
• Restart your phone before big edits
• Turn on Performance Mode (Samsung, Xiaomi, etc.)

This alone fixes freezing for many users.

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2. Clear CapCut Cache

Corrupted cache often causes freezing.

On Android:

• Settings → Apps → CapCut → Storage
• Tap Clear Cache (not clear data)

On iPhone:

• Uninstall and reinstall CapCut (iOS does not allow cache clearing)

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3. Disable Heavy Real-time Effects Temporarily

Turn off or avoid:

• Motion Blur
• Body Effects
• Auto Velocity
• AI Enhance
• Chromatic Aberration
• Face Tracking
• 3D Zoom

Edit your video first → apply heavy effects at the end.

CapCut Export Failed on Complex Projects — Causes & Working Fixes

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4. Reduce Preview Quality

This does NOT reduce export quality.

Inside CapCut:

• Tap Preview Quality
• Select Low or Default

Low preview uses less RAM → smoother editing.

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5. Break Project into Smaller Parts

If the project is too complex:

• Export shorter sections (20–40 seconds)
• Start a new project
• Combine the exported clips

This method prevents freezing on long, demanding edits.

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6. Update CapCut

A fresh update often fixes freezing issues caused by bugs.

Open Play Store / App Store → Update

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7. Free Up Storage Space

Low storage affects app performance.

Try to keep at least 3–5 GB free.

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8. Keep Device Cool

CapCut is heavy. If your phone overheats:

• Stop editing
• Let it cool down
• Avoid editing while charging

Overheating reduces performance and causes freezing.

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9. Reinstall CapCut

If freezing continues:

• Backup your draft (CapCut sync if available)
• Uninstall → Restart → Install again

This removes corrupted internal files.

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Extra Tips to Prevent Freezing

• Avoid extremely long projects (10+ minutes with effects)
• Use MP4/H.264 videos instead of HEVC or MKV
• Turn on airplane mode to reduce background processes
• Don’t use screen recording while editing

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Conclusion

CapCut freezes during editing mainly because of low RAM, heavy effects, large video files, background processes, bugs, or heating issues.

By clearing cache, reducing preview quality, closing background apps, simplifying the project, and keeping the device cool, you can drastically reduce freezing and enjoy smooth editing.