Quote - If you view this as a loop in WMP, a "glitch" in the shirt is visible.

What "glitch" are you talking about? And when looped? Do you mean where it ends and jumps back to the beginning? That's not a glitch, it's just that real life doesn't "loop" and the end frame in and real life video would do the same.

That's not a draw back, it's reality. Trying to make a looping animation with dynamics is tricky to say the least.

Messing around, I wanted to make a ghost animation with a ball and dynamic cloth sheet. Well, after numerous attempts, I ended up cheating.

As you can see in the image, I had it fly out of scene on the left and right to hide where it "glitches".

                                                                                                                    

Poser 10

Octane Render

Wings 3D