I bought this projector because I needed the projection ratio (6m distance to the screen). I connected the HD cable TV box and Apple TV and Full HD works fine, without any stuttering. I have decoupled the sound (via an intermediate device) and play it back via a hi-fi system - the loudspeaker built into the projector is nothing and the analogue output sound signal provided by the projector hums when I run it through the amplifier.

I use it as a home cinema with a minix u1 and it works fine, without any stuttering. However, I have not yet tried 3D.