So I've always had this problem with using the S_Shake effect where on some clips, not all, the end of the clip will be frozen/reversed a frame. I didn't know what the problem was until I disabled S_Shake on the clip effects and the last frame was normal again, I then re-enabled S_Shake and once again, the last frame of the clip was frozen a frame behind. I have tried reinstalling Sapphire after uninstalling it fully from my PC, and yet again the problem recurs. I have even upgraded from Sony Vegas 12 to 13 to see it that was the problem, but the problem still happens.
This problem disrupts the flow of the clip as instead of it flowing into the next clip, it seems choppy as there is a frozen frame inbetween the two.