Q: Profile manager load

You should run activity manger and try to see what the bottleneck is? You could try etrecheck too.

-- check if you have enough memory

-- check if you are accessing the disk alot.

Lets see if we can find what is wrong.

1. etrecheck --  A great tool for finding all about your mac.
   http://www.etresoft.com/etrecheck
2. Run /Applications/Utilties/Activity Monitor while you are using your machine and see if you can identify the problem.
3. A distant third would be:

console logs -- look for problem messages.

http://www.macissues.com/2014/03/23/how-to-use-the-system-console-in-os-x/

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Some semi-random thoughts on addressing performance problems.

Activity Monitor
Look at what is happening with your Mac when you run Activity Monitor.

Macintosh-HD -> Applications -> Utilities -> Activity Monitor

Look at my activity monitor image below.

You want to look at all the tabs to see what is out of "alignment".  Here is more info about cpu usage. %CPU is the more interesting number in my mind.

  make certain:

  1) little arrow appears in the %CPU column

  2) little arrow is in the down direction

  3) Activity Monitor is monitoring (All Processes)

  4( Make sure that you have clicked on the cpu tab.

Use the View menu to change to All Processes if needed.

            ... clipped ...

You can gain some understanding of Activity Monitor by  looking at it every once in a while.  Look at the small graph below to see the total cpu time used.  See what processes are listed on top.

Here is how I have my cpu display set up for Yosemite.

Console
You can use the console application to examine Mac OS log files.  The logs will contain information on various system processes.

Macintosh-HD -> Applications -> Utilities -> Console

File > open console log
this will display the startup messages

and
file > open system log
once the system is started, messages will go into the system log