Animation extremely slow after using motion trail visualizer

[Anonymous]

I tried to make an editable motion trail in my animation and now I can't frame through keys without them loading for 20 seconds. I don't know how to undo it either. When I open files pre-visualizer, I can frame through things just fine. I've tried restarting Maya and my computer but it hasn't helped. Anyone have any solutions?

[gcoleman7779]

For some reason the motion trails are extremely hard on a lot of machines. They can also crash the program if edited too fast in my experience.

[jmreinhart]

gcoleman7779 is absolutely right.

The reason they are so heavy is because unlike the curves you see in the graph editor, the animation visualizer curve needs to take into account the full rig. So if you had a visualized curve for your wrist and you moved your shoulder, the curve would need to re-evaluate everything from the shoulder down for every frame being visualized. Ideally you could just recalculate the curve for the short region that you edited, but because that edit affects the curve in nearby frames it actually needs to calculate quite a lot. 

Using the grease pencil tool in the locked camera view is a technique I've used when the visualizer curve is too heavy.