ITUNE SLOW START

Hi...

After installation of new 12.7 update the iTunes has been starting slowly, taking 5 to 10 min to open the iTunes window. i tired reinstalling it and many other solutions available on the internet, but non helped. so every time i want to use iTunes i have to load it and wait 5 to 10 mins for the window to pop up.

please provide me a solution, cuz its frustrating....