Look this Wheel. Any time I put the mouse over the feature revolved it spend several seconds until it has draw all the lines fillet and so on.
The sketch is no so complicate but I need to wait several second until I can do anything else.
The equipment should be enough to draw a Wheel:
Curiously, once it has finished to drawing all the orange line, I have no problem to move very fast the solid body in all directions.
Is it possible to tell SW not to draw the orange lines?