hy, im having trouble with some easy pyro sim.

i have an animated object, emitting smoke (0,-1,0) direction wich is working fine until it starts to moving, the smoke deforms by the speed, wich i dont want to.

i want to keep the smoke direction strictly.

any idea to fix it?

Your smoke is behaving the way it would, and is inheriting motion from the movement of the sim. If you don't want it to obey that motion, then I'd suggest simming on a static object and then copying that simulation onto the animated object. The other option would be to increase the timescale of the simulation to a point where it doesn't get dragged behind by the inherited velocity, but then you will need to change your shape parameters to get a desirable look at that timescale.