Sharepoint People picker issue

After recent migration of our farm from SharePoint 2010 to SharePoint 2013, we faced issues, where people picker on various web applications were slow / not returning users.

As the organization had multiple domains , we had to set up the People picker property to make sure it searches all the domains. Here is the sample to the script: 

STSADM.exe -o setproperty -propertynamepeoplepicker-searchadforests -propertyvalue“forest:xx.mycompanyplc.com;forest:in.sisterconcerplc.corp,uk;domain:department.department1.com” -urlhttp://samplePortal  

This has not only resolved the issue where user were not returned, but also improved the speed.