multiclip

I have a problem with a music video editing.

The footage I have is: HDV (720p24).

I?ve sinchronized each angle by In point and created a multiclip. I want to start editing: I drag a multiclip into the timeline. I enabled the open option in the Playhead Sync pop-up menu that I could watch all of my multiclip angles playing simultaneously in the Viewer while also seeing the results of switching and cutting in the Canvas, all in real time.

But problem is: when I first drag a multiclip in the timeline render bars become orange in Unlimited RT mode, and, if I did rendering for it, I can?t to watch all of my multiclip angles playing simultaneously in the Viewer while also seeing the results in the Canvas (the open option in the Playhead Sync pop-up menu is enabled): in the the Viewer is playing the same curent frame as in sequence - as in the Canvas.