Why does Outlook become slow when handling oversized PST files?

[WillieAnderson]

Outlook becomes slow when handling oversized PST files because large PST databases require more system memory and take longer to load and synchronize emails. Microsoft says huge PST files could cause slow performance and even corruption issues when the file approaches the Outlook size limit. To resolve these challenges, many users separate enormous PST files into small sections using programs like DataVare Outlook PST Split Expert Software. This software can split oversized PST files by size, date, year or folder without losing email contents and folder hierarchy. Smaller PST files increase Outlook speed, minimize the chance of corruption and make mailbox maintenance much easier.
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