I'm not getting as smooth of playback when editing. It seems Vegas is throwing out frames and making the playback appear choppy. It doesn't seem to matter which playback option I select (e.g., draft, preview, good etc.). I'm editing a chess match and often the pieces just jump to the new location without seeing the hand move them. It's like those frames are missing in playback. I'm only editing 1080 files, so it should not be choking my CPU. I can move back in the timeline and play through the video again it will show me the hand making the chess move, so its happening in the first run through the raw video.
Note: this is new to update 636 of Vegas, 550 played back smoothly editing these types of files.
Is there some setting I need to make to stop the frames from dropping while editing?