exactly where you've got your movie stored... i have a 40" 8000 series and have no partitioned drives other than my external drives... but it sounds to me like you may be playing the movie wirelessly? if this is the case and it is possible, i would connect with a LAN cable and see if there is a difference. you can also (on some new routers) set up "QoS" which gives priority to video streaming if set up correctly.
i spent a lot of money buying a led 46b8000 tv plus the wireless adapter. I setup the network with no problem, but when i play a video it interrupts every 30 seconds to transfer the nets part of the movie to the tv and it takes 25 seconds to continue playing the movie. it is impossible to watch a movie in this conditions !!!!.
the movie is located in the second partition (E) of my tv. i have a wireless router netgear wpn824 v2 and a modem netgear dm111p.
any clue? pls