Changes in rendering engine since last 2-3 builds ?

[adicoto]

Haven't played since about 2 builds ago some HD MPEG2 files. First, I open a file on my PC, 1280x720i, MPEG2 file, to see that the image remains on place while the video window was moving, shrinking, enlarging using the mouse. OK, first thougth - the new videocard (HD2600PRO) takes control of the decoding. and that's done via the overlay mixer. Changed to overlay mixer as rendering method and all works fine. No bug, just an altered rendering method due the new videocard. Happy user again.
That was what I believed until today, when trying to open a fresh acquiered file of a MPEG2 HD 1280x720i @ 59.94fps on my laptop. Same behaviour, but no vodeocard change !! Both my computers are running same Elecard MPEG2 decoder, same AC3Filter Build, 1.46. PC is running 2.25, laptop running 2.26. So, topic title is ontopic or not ?

LE: forgot to mention that on "overlay mixer" the video isn't played smoothly as in default internal renderer.