Takes a LONG time to log out

I have a spare computer at work that does handle a 5 box team on low setting. There might be a little lag every now and then but nothing to complain about. My problem with this computer is the massive time it takes to log out a toon. Even with Im solo-boxing, logging out a toon to the character selection screen takes anywhere from 15-25 seconds. This takes even longer when I have multiple toons on, and Im tring to log them off one by one.

I guess what im trying to ask is that is there any free program that could "test" the system to see what could be the problem?

Easy solution: don't multibox at work, do something else!

It keeps me from going to the driving range.

Looked into what was running on the computer when it first starts compared to what happens when I open work programs. Openeing up Task Manager when the computer first starts show cpu usage at close to 5%.
I then opened up my work program and although cpu usage jumps up because I am loading the program, it stays at 50% even when the program is idle.
Looking under the "Process" tab in Task Manager, there is now a "System" running with a 50 under cpu....and a 240K mem Usage. I then closed my work programs so there was no program running on the computer, and the cpu usage stays at 50%.

So it looks like "System" is eating up 50% of my cpu. Any ideas? I ran anti-virus and malwarebytes and everything comes up clean.

well without knowing the parts of you're work computer, it is difficult to diagnose the problem.

But here is a shot in the dark, is your Hard Drive (5400RPM) with low cache (16MB)? And what is the last time you defragged the hard drive? Hard drive could just be very fragmented which is slowing down the caching of files in windows(if you are using windows???)

but yes more info would be great