I have another solution for the stuttering during streaming which worked for me but has not been listed before. Disable the noise filters on the PS3 itself. I had 1080p files in .m2ts or .mts format that just kept stuttering no matter what I did - 100mb, 1gbit network - whatever. I changed a setting on the PS3 itself and solved the problem, can now even use a 100mb LAN connection and the 1080p video streaming works smoothly using PS3 media server. On the PS3, you need to disable all the "noise filters". The setting for these can be accessed during playback only by pressing the Triangle button on the BD controller or game controller then highlighting the icon for "AV setting" and pressing the "x" button to select. Disable all thee of these of noise reduction settings. You will see there are three of them - frame noise reduction, block noise reduction and mosquito noise reduction. For some reason, disabling all of these stopped all the stutter, even though these settings are most often associated with upscaling of DVD disc playback, not streaming of 1080p m2ts files.