Salesforce runs slowly for some users and not others when the issue is isolated to a specific browser configuration, network connection, or device — rather than a platform-wide problem. This article covers how to diagnose and resolve user-specific performance issues in Salesforce, including browser, network, mobile, and Lightning Experience troubleshooting.
Before contacting Salesforce Support, work through the troubleshooting steps below. Service disruptions or platform-level issues rarely affect only one user. If a single user is experiencing slowness, the cause is typically local to that user's environment.
Troubleshoot issues with Google Chrome
Troubleshoot issues with Safari Browser
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