Short report.
First: i'm using MP audiorenderer and refreshrate changer.
Second: my hardware is not very powerful (ati hd 5450, p4 3200MHz), but versions 049 and 055 work without any problems (literally any!).
But...
Version 056 is also good but first played movie must be 25 FPS (50Hz refreshrate in that situation), any next file (23,976, 24 or 25 FPS) also plays smoothly.
When first played file is 23,976 or 24 FPS (24Hz tv refreshrate) everything is ok till stop. After stopping MP interface is very laggish and 25 FPS files played after that are very stuttery. Playing 23,976 or 24 FPS files continuously is fine in that situation.
Version 058 is similar in behavior to 056 for me.

First: i'm using MP audiorenderer and refreshrate changer.
Second: my hardware is not very powerful (ati hd 5450, p4 3200MHz), but versions 049 and 055 work without any problems (literally any!).
But...
Version 056 is also good but first played movie must be 25 FPS (50Hz refreshrate in that situation), any next file (23,976, 24 or 25 FPS) also plays smoothly.
When first played file is 23,976 or 24 FPS (24Hz tv refreshrate) everything is ok till stop. After stopping MP interface is very laggish and 25 FPS files played after that are very stuttery. Playing 23,976 or 24 FPS files continuously is fine in that situation.
Version 058 is similar in behavior to 056 for me.
Croatia