Phasma Extra attack percentage...

Can we fix the damn percentages for Phasma programmers???? There's no freaking way that a 20% chance leads to virtually an 80% amount of time where this "double hit" occurs for the AI. It's getting pretty damn ridiculous to get hit 10 times for every 2 or 3 against an AI. There has to be something wrong with the programming here as there's no way a D20 roll will lead to that many successful double-hits.