Meringue powder brand differences

I haven’t been able to find Sunny Side Up Bakery meringue powder at my Hobby Lobby, but they had a brand called Cake Craft that I bought because I was in a pinch. This batch of royal icing I made with the Cake Craft is entirely different. While making it, it went to a flood consistency with the amount of water it takes me to usually get to a piping consistency. Then while flooding, it is creating a film so fast I’m having a hard time doing a wet technique because it just wrinkles. The picture I attached is what it’s doing. My question- is this all due to differences in the brand of meringue powder? I didn’t change anything else about the recipe, so I have to think it is.