UI Response on heavy loading Data from Database

Hi All,

i am looking to find out solution if i am using data loading into grid from data base my screen take 20 seconds with total 300 records and 50 columns +.

Store proc it self taking 7 seconds and my UI taking rest time, i am using WPF and WPF Datagrid ,

I want to improve UI performance , as soon i get data from database i want to show on UI, i want to remove rendering time, i dont mind to change architecture, but want immediate response.

Thanks in advance.