A wandering trader apeared by my home, two had appeared already before but this one is running at an absurd speed. He slows down for half a second when bumping with terrain but remains fast. I managed to click on him to begin a trade to see if it could calm his metahuman genes but begining a trade doesn't seem to quench his need for speed. Saving and reentering my game solved the problem but I dont know if it may happen again so Im choosing to report this as a bug.