iA Writer High CPU Usage on Mac
Workaround available Mac Updated October 21, 2026
Quick answer
High CPU in iA Writer on Mac comes from indexing folders added to the Library. Adding very large folders (or a whole drive) makes it worse — remove them, and reinstall if the app stays unresponsive.
Most likely fix: Wait for indexing to finish.
Symptoms
Fans spin up, iA Writer becomes slow or unresponsive after adding a location.
Why it happens
- Indexing a newly added folder
- Very large folders or system partitions added as locations
How to fix it
Try these in order — the most common fix is first.
1. Wait for indexing to finish
- Small folders finish indexing quickly; leave the app open briefly
2. Remove very large locations
- Remove big folders or entire drives from Locations
- Add only the folder that holds your writing
3. Reinstall if unresponsive
- Back up documents and templates
- Remove iA Writer and its preferences
- Restart and reinstall from the App Store or iA
This guide also covers
- ia writer high cpu
- ia writer slow mac
- ia writer not responding
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