Improve Speed and Performance of Lightning Experience Pages

Network, device, browser, and org configuration issues can all affect your Lightning Experience page performance. Learn best practices and common solutions to speed up your system if you’re experiencing sluggishness or long page-load times.

https://MyDomainName.lightning.force.com/speedtest.jsp

• Scale Test
  To ensure that your Salesforce implementation meets your future needs, it’s important to develop and test your system with scale in mind. Meet Scale Test, your central hub of information and resources about scalability and performance testing with Salesforce.
• What Is EPT?
  Experienced Page Time (EPT) is a performance metric Salesforce uses in Lightning to measure page load time. EPT measures how long it takes for a page to load into a state that a user can meaningfully interact with.
• Measure Performance for Your Salesforce Org
  Set up your test org and test client, and accurately measure performance.
• Network Best Practices
  Issues within your network or latency between your device and your Salesforce environment can affect load times.
• Device and Browser Best Practices
  To improve device and browser performance, you can take some simple steps. Slow load times can result from devices that don't meet Salesforce minimum technical requirements. Also, plug-ins, extensions, and excessive tabs can consume processing power and memory, degrading performance.
• Org Configuration Best Practices
  The way your Salesforce org is configured can lead to slow performance.
• Improve Virtual Desktop Environment Performance
  Virtual desktop environments sometimes have older processors and are shared by multiple users, potentially resulting in slower page load times. To predict how a virtual desktop performs with Lightning Experience, run performance tests from within the virtual environment.