Anyone else having problems?

Hi guys. So just a few games in and I am having several issues with this affecting gameplay. My most pressing bugbear is marines in overwatch simply not firing. In the last instance I have four terminators with LOS and in OW on a doorway and a genestealer romps in, one guys shoots and misses, nobody else bothers and the stealer dances round and kills three in one move. This makes it unplayable. Any ideas> Anyone else find this happening?

Sometimes their guns will jam. It’s a game mechanic.

Hi Kabar, No, it wasn't a gun jam. It was as though there could only be one marine firing at a given target in that turn. Stealer steps in, one shot and missed, stealer then moves two tiles with nobody else firing, kills one marine, moves again and no shot from anyone, kills another, turns and kills a third. It was insane.