KT definitely suffers a lot if its forced to fire on the move from what I noticed. As for scatter, the only reason I could think for its strangeness is its scatter max is 5.7 with angle scatter being 5 and somehow that causes issues.
It has less offset than the regular Tiger - though the regular Tiger has less scatter - and the projectiles originate from the same-ish area.
What's stopping you guys from making it exactly the same as the tiger if that's a possible issue? Just curious.
I've noticed the same, sometimes the KT's shots go way the fuck off.