Slowmotion /upscale/ duplicate frames issue

with the two or three old versions of veai, the flickering problem with the dione dv and dione tv models were corrected, but with the last version, the problem returned, whether it be deinterlaced with the gpu in the properties of vegas pro then rendered as interlaced video again or be it my basic source video, the flicker is present again. On the other hand for the duplicate images, I noticed that it did it to me too, at a certain point of the video before, and with this last version, the model dione dv (v3 only) slows down the video and doubles the images, I have looked in the properties of the media, the video is in 25 fps progressive instead of 50. On the other hand with the model dione tv, there is no lag, the video is well in 50 fps. the test video:
veai : dione tv and dione dv avec vegas pro - YouTube