Deep Sea Nami: laugh spam is unsatisfying

One of the most fun parts of playing is spamming her laugh. I recently received Deep Sea Nami as a gift from a friend and with that skin her laugh isn't as quick and repetitive as her other skins. I don't know if this has to do with the voice change or if it is a bug. Is there any place I can report this to riot so they can fix it?

I'll try to make a video of a comparison soon.