At this stage we all know the Time Progression really eats into your FPS so many of us are just not even using this feature; I'm losing 30-40 fps with my triple 1080p setup But to be honest it doesn't bother me too much anyway because my races are never more than an hour long so realistically there isn't much shift in the shadow unless I change the speed to x3 or more but that takes away the realism and hence just feels like a gimmick to me. BUT What I would love is to be able to have each session automatically advance to the next time point. eg. I set up a race with Qualy set for Early Morning Race1 progresses next time step (to the Mid Morning setting) Qualy2 progresses next time step (to Mid Day setting) Race2 progresses next time step (to Mid Afternoon setting) This means the shadows don't change during session (so we don't lose fps); BUT they jump one step up when moving to the next session. AND this would feel more realistic anyway! So when setting up the race the player just sets starting time of the race day and clicks an option tick box for it to progress one step for the next session of the race day