hmm, not sure I quite understand the issue. Are you saying that you have a fire animation that is X frames, but your timeline is set to something 3 to 4 times that and while your character animation is looping properly, the weapon isn’t?
I’m not sure if anything in the toolkit was cause such a thing. I’d have to see the setup to be able to help more, I think. Feel free to send a file over to .@epicgames.com if you like and I’ll take a look!