UPDATE 6/22 1:16AM
Okay, so I think I figured this all out: basically, last night, PowerDVD needed an upgrade/update, to which I didn't know about nor know what it did. But I did it, and it seemed fine. Played a couple of blu-rays, kept my start task manager up, and I think I know the picture/not the audio slowed: because if I want to play this thing without that problem, nothing else should be up (no IE, Firefox, etc), otherwise I should just expect it. The CPU usage was up to 100% using it and the external BD drive, and the Memory was going up that meant the picture was slowing.
I don't know if would still be problem, though. But I got my answer. Still don't know where to check on what it updated/upgraded.
BTW, did I mention the external BD drive? If I didn't, it was probably because I used the PowerDVD on just a DVD and still happened. Sorry if the BD drive needed to be pointed out from the beginning.