I have Power Director 10, and I have the Nvidia driver version 301.42 with my Windows 7 64. My problem is that every time my computer tries to upgrade my driver, Power Director has a problem; it will not smoothly play back any video in the monitor screen. It has to rerender the video every couple of seconds of video. The only way I can fix this is to redownload the older version of the driver. My trial version of PD11 had the same problem. No real help on any of the PD forums, nor from PD technical help. So I am turning to anyone here for ideas.
Thanks.
Mike

hi just saw this now, i dont know if youve solved your issues already.
you could try reinstalling pd10.
ive never got pd10 to work properly for me, even on an ssd.
but when i upgraded to pd11 everything was fast and extremely smooth. in fact it scrubs as fast if not faster than ppro 5.5 .
your demo of pd11 could have been laggy because it uses some of the same files as pd10.
so my suggestion is uninstall both and reinstall pd10. if that doesnt work and youre willing to spend a little more upgrade to pd11.

Thanks for your reply. Since I started the thread, Power Director has provided a patch to fix the problem I was having.

Mike