Final answer:
To optimize NetSuite's performance, resize dashboard portlets, use the smallest portlet level refresh, and minimize the use of dashboard reports and searches.
Step-by-step explanation:
To optimize NetSuite's performance in a browser, one effective action you can take is to resize dashboard portlets. This can help improve loading times and overall performance. Using multiple browser tabs with NetSuite may lead to increased memory usage and potentially slow down your system. Therefore, it's generally advisable to limit the number of open tabs. Similarly, setting portlets to use the smallest portlet level refresh will ensure that data isn't being unnecessarily updated, which can also enhance performance. It is also recommended to minimize the use of dashboard reports and searches, since these can be resource-intensive and slow down the rendering of your dashboard.