I'm almost finished building some work which uses five videoplanes and a fader to fade them in and out (using a line on color alpha). My app is running fast but the fades themselves look pretty bad (very jerky) especially if I make them (as I want) 10 - 20 seconds long. I've included the basic mechanism I'm using below which looks ok as its really pared down but once I take it up to five and add my app around it slows right down.
Is there a better/faster/smoother way to fade in and out? Is the line the issue, maybe I need to use a fade that somehow speeds up as it nears it's climax or perhaps the videoplane is the issue and I should be using something like a sketch instead (the videoplanes I'm using have jpgs showing on them)?