anim2 smoke effect causing strange effect

On my newest smoke effect I used the anim2 mode while running instead of speed for the first time. after looking through and seeing what everything does I have made my own. My encountered issue is a very strange but realism breaking problem. when running between 4 and 8 mph it has particles shoot out in straight lines from the stack, sometimes in multitudes spanning from a couple hundred feet to miles long bands of particles. this line is not upward but spreads perpendicular to the ground. where the problem lies though is I have copy pasted one that works from the original engine without any problems onto the new one however the same problem still happens with it. I'm at a loss as to what is going on, there have been no mods to my version other than reskinning so something related to the model itself is not the problem.
any insight is much appreciated.

With thanks,
The Brougham Gamer
 
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