Help with my Frenzy Script

Hey everyone, I attempted to make a script to emulate teh current #1 solo Barb on NA boards, which uses a LoN build around frenzy and furious charge. Here's the link to my script:
https://www.ros-bot.com/custom-script/deekyfreaks-lon-frenzy-487072

However, I've noticed that when I'm running it, every few density groups, after a mob dies, it'll just sit there and not do anything. I know it's something to do with the script I did, but I'm a complete novice with creating one, so any help would be greatly appreciated!

Also, I have the furious charge set above frenzy in priority, so it's pretty much just spamming FC when in a pack, instead of FC once, then spamming frenzy. How would I change it so it'll only do FC once to charge into the density, then start frenzying?

Thanks!