I got this player with my 3D TV. I connect my portable USB powered 500GB HDD to the player and play files of it. I have decent experience playing non-3D files.
I have mixed opinion about playing some 3D mkv files, some play good and some don't.
One particular 3D mkv file had DTS 7.1 - which when played, always skips audio. I removed that particular DTS file, converted to AC3 2.0 and muxed back with the video. This time the file played absolutely fine.
One particular 3D mkv file used to get stuck during high action scenes. This file too had a DTS audio, but 5.1. My first reaction was the USB is not able to stream high amount of data - but i plan test again with audio converted to AC3.
Also, In general, I noticed an issue when scenes involves panning - the video is not smooth and "stutters" - this is applicable for any video (2D or 3D)
If anyone was found a solution to this - please let me know.