So It has nothing to do with whether It's a good computer or not
In my experience, It has to do with the Blizzard Special's particle that appears at the center of a monster when It hits It, whether the special works or not. I believe 1-target Blizzard Is not so bad, but when It's countless monsters around, It's when It happens, the frame drops. Personally, It used to be a thing among Banana cannon users; now Idk what happened, people don't use Its special so frequently.... (maybe they had the frame drop Issue as well? ).