I have updated to the latest VLC 3.06 but I am unable to slide the video to access certain frames using mp4. Now I downloaded an instructional video from YouTube that has webm format that seems to work ok but I mostly use mp4 video. It just freezes when I try to slide it to a certain frame. I don't recall having this problem before. . I have a decent computer i7 with 8gb ram, SSD drive and a GeForce GTX 670 graphic card should be adequate for this. Any suggestions is appreciated.