First, I am using a wired connection. I typically only stream .mkv files (nothing better than 720p) to my PMS (1.9.1) and they're normally fine. However sometimes they stutter, slow down, or move at hyperspeed -- all while the audio remains normal. Is there a way to correct this? I read through some other threads on this topic and the information regarding it seems to be all over the place. And 99% of those people were using wireless.