my premiere pro not working properly. it's very slow now a days.

my premiere pro is not working properly. it is very slow now a days. i tried uninstalling and reinstalling from the creative cloud, but it's not helping. if I am working on a single clip, its kinda fine. but if i add a sound file to my timeline there it goes, it becomes slow, i can't pan through the timeline and it seems like the premiere just don't like sound files wth. please help someone