We merged with another company; both sides have their own SQL Servers in different locations and data centers.
Before the Domain Trust was in place, people from both sides were accessing to other side's databases with SQL Server Authentication (temporary solution).
Now the Domain Trust is established, and we can use Windows Authentication (will be the long term, permanent solution) to connect and pull data from each other's SQL Servers.
The issues is.... connecting with Windows Auth is about eight times slow, and pulling data is at least three times slow compared with SQL Authentication.
Any idea why it is so, and any idea how we can make Windows Authentication as fast as SQL Authentication.
Thank you for your help.