Problem can be recreated in Demo Show, sound&light.tml. If you move the "Speed beam" fader to 100% you will see when it moves it much quicker. More noticeable, if you moved the fader to -100%, you will see nothing will light up. There is no option in timeline setting or for individual light scenes to be not controlled by the/a (speed) fader. The "Speed Wash" fader doesn't have any effect on the light scenes...that I could notice.
Thank you,
Bob