Outlook 365 Windows desktop app is critical for many of us, so what do you do when it isn’t performing as it needs to? Continue reading to find out how to fix Outlook 365 performance issues.
Symptoms of Outlook 365 Performance Issues
- Outlook CPU usage is high
- Animated gif’s / images in emails stutter
- Switching between emails is slow
Common Solutions
Solution 1: Disable Hardware graphics acceleration
A Graphics Processing Unit (GPU) are designed to handle graphics-based tasks efficiently. However, most computers don’t have a dedicated GPU and share system memory and processing resources. Hardware graphics accelertaion when using a dedicated GPU will improve performance, but when using a shared GPU, the performance can be degraded and cause high CPU load. As a result, disabling the hardware acceleration can improve the performance of Outlook.
To disable Hardware GPU acceleration, follow these steps:
- In Outlook, Click File
- Select Options
- Click Advanced
- Within the Display section uncheck Disable Hardware Graphics Accelleration.
- Click Ok
- Finally, close Outlook and reopen for the setting to take effect.
Solution 2: Disable Offline Cache in Outlook
To disable offline cache in MS Outlook 2016/365:
- Open Outlook.
- Select File > Info tab, Account settings > Account Settings.
- The “Email” tab is selected with focus on the active email exchange account.
- Double-click on your email address listed.
- Uncheck “Use Cached Exchange Mode”.
- Select the “Next” button, then “OK”, then “Finish”
- Finally, restart Outlook.
For more information on cached exchange mode check out:
MS Outlook Cached Exchange Mode [support.office.com]
Did this resolve your Outlook 365 performance issues?
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