I use this MKV for testing:
"Home 2009 Blu-ray 1080p AVC DTS-HD 5.1.mkv"
It's a 21GB monster with very high average bitrate (16-20 Mbps). With Splash 1.1 I didnt get any sound, but the picture was perfect with Picture2 (Motion2 = max).
With Splash 1.2 I get the sound but (as I wrote before) the movie went to slideshow. I thought the program needs time to caching. Waited for minutes, but the experiences are the same. Green flashings, audio and video unsynchronized, and nice slideshow. Splash using my 2 CPU cores above 80%.
P.S.: I've tried to play a tiny 3GB Full HD movie with low bitrate. (Ice Age 1) Same experiences.
Of course, other programs with GPU acceleration can play smoothly both video.
Joc