I have had this issue for 2 days now (my whole crossfire career) it seems that certain NPC fighters (it seems hawks or hawk lookalikes are the worst but ive experienced it with several others ) move in a very laggy way. This mostly means that they move around very erraticly and "jump" from one place to the other. I have checked my ping every time i had this issue and it seems it is always around 35 (between 30 and 40) so that shouldn't cause too many issues. I have also not experienced this lag anywhere outside of combat and players and trade ships and such move very smoothly all the time. The biggest issue i have with it is that it can make 5 minute fights take about half an hour and it realy breaks the game for me.
Hope to hear from someone about it soon.