Can you identify which 2 cylinders it drops?

The wasted spark coil is basically 2 coils, one side sparking 1 and 4, the other sparking 2 and 3, if you can find out if the 2 cylinders it drops matches this then there is a good chance its one side of the coil dropping out and definitely spark related, if its not maybe it fouls plugs etc?

If the issue is one side of the coil dropping out, swap the amp plugs over, see if the problem follows,(it should change to the opposite coil) this will tell you if its amp related. if it stays on the same side of the coil, it could be coil, or a driver/loom issue.