Graphics Acceleration, CPU usage, and Laptop Batteries
If you using a Retina Display on a Mac machine, and find that Postbox is using too much CPU as a result of graphics acceleration, you can try setting a hidden pref which toggle optimization for battery life vs. performance.
- Go to Preferences / Advanced / General / Config Editor.
- Type in layers.acceleration.disabled in the text field at the top.
- Double click the row that displays below and set this value to a different value.
- Restart Postbox.