Click File (from the top left) and click Options.You can disable RSS feed & synchronization right away from the Outlook Settings.

Many Outlook users like to receive RSS feeds straight in Outlook and get updated with what’s happening, but this can cause a lag in performance. A small window would pop up, select/deselect the checkbox(es) to activate/deactivate add-in and click OK.Select all unnecessary ones from the add-in list, click Go,.To overcome this, you can enable/disable these additional pieces of functionality via Outlook Settings: Because of these add-ins, Outlook might load slower. Microsoft Outlook allows you to integrate third-party services. Some Useful Tips to Speed Up Microsoft Outlook 2016 Performance Disable Unnecessary Add-Ins In this article, we’ll guide you through some methods to get your Outlook back on track. To avoid this ruckus, what would you do? How would get rid of it? As Outlook processes loads of user data every day, like shared events, invites, contacts, emails, attachments, etc., there are fair chances that you may note a drop in the performance of Outlook on your PC – like the slow launch of the application, lag in operations, synchronization problems, etc.

Optimize for compatibility in outlook