A number of years ago now I moved away from Power DVD because I could not get smooth playback, the Blu-ray video always jerked and it was more pronounced with the frame interpolation feature on my Projector.
Now with TMT 6, I can't get that program to work in Windows 8.1; here is the problem as presented in the support ticket to Arcsoft:

This doesn't happen in W7, but always in W8.1. I tried to find out what was causing this a while ago on my old dv8 laptop, but never found the problem. So I've built a new HTPC with a NIVIDA GTX 760 card and a Haswell i7-4770K processor and the problem occurs here as well _ of course. Display is a Panasonic PT-AE4000 projector and a Denon 988 AVR. It happens about every 10 minutes, give or take 20 or 30 seconds and each episode last about 2 to 3 minutes. I disabled the built in Security Essentials, Windows Firewall, uninstalled all the Apps (I have no need for them anyway)and shut off any processes that I could think of. Nothing worked... In W7 I had to have TMT6 disable Windows Aero which caused the problem I am talking about, but that option is gone in W 8.1. If I choose a Windows Desk Top High Contrast theme the problem goes away. However this not a solution, but a work around. Not only that, the High Contrast themes are very ugly. To re-create this situation you need to be running a NVIDIA video card (any driver, it doesn't matter), have a Blu-ray movie playing with a 29.976 frame rate and the box has to be ticked to allow TMT6 to change the cards refresh rate to match the Blu-rays frame rate. If you have a frame interpolation function on your display and it is turned on, then the problem I am discussing is even pronounced. What is needed is to have TMT6 choose a Windows High Contrast desk top theme while a movie is playing. A user option should be made available to allow users to do this _ like disabling Windows Aero in W7. If not that, then perhaps a change in the program that is not effected by Windows 8.1 desk top themes.

However, Power DVD13 works fine in W 8.1, no matter what the desk top settings are.

I read somewhere that Cyberlink has used the XBMC engine and built their product around it, I would be curious to know if this is true.