Just replaced my old Vista MCE with a new Windows 7 machine:
Xeon dual core, 4GB, 5 disk hardware RAID 5.
The 750 signed right in, and the new interface works great. Video playback is fine too, however:
if I pause/FF/Rew Skip forward or back, the video pauses, and then choppily with do FF/Rew etc.
Sometimes it lags out for 10 seconds or more. The problem does NOT occur on the new Windows 7 at the console. Just on the DSM-750. I've tried different resolutions, and rebooted the extender and the PC several times.
It displays this behavior with recorded TV (SD/HD), and My Movies...
However if I "Back" the interface is still snappy and responsive... just seems to get confused when I initiate any "controls" over the video playback other than just "playing".
BTW - I am on wired ethernet connection, so this isn't a wireless issue.. Although strangely the Media Center network bandwidth analyzer shows some pretty wild swings in performance... I can't imagine it is accurate though, as there is little activity on my home network, and everything is plugged into a GbE switch.
Anyone have any ideas?