My MacBook Pro is taking time to load after signin I'm facing strange issue with my new MacBookPro(4GB RAM). It is taking more time to load apps after signin. And when I click on any app, it is stopped responding for some time. 

I did FirstAid to my both drives(one is Macintosh, 2nd is other data drive) to find and repair what is going wrong, but result was success(Nothing to repair).

UPDATE:  per the suggestion in the comments, I created a new user account and now my MBP works correctly when signed into the new account.  What could be in my old account that's causing the problem?

I issued the command below to get the size of my home folder:

sudo du -d1 -h /Users


Results:

190M    /Users/bujji
4.6G    /Users/Nagendra
364K    /Users/Shared
4.8G    /Users
It appears that there's some corruption in your old account.

What you need to do is two fold:


Make the new account your primary with the intention of eventually deleting your old account.
Incrementally copy of files and settings from the old profile to the new one until all the files are transferred.


You want to do this in small batches because you don't know what is corrupted and what isn't.  Now, it's highly likely you won't have a problem with documents, pictures, movies and music.  However, there may be a setting (file) for an application that is causing the issue.  

If after a copy, things go awry, you will have narrowed down where the offending file is.

All in all, the solution was and is to create a new user account.