I'm trying to change the multiplier to something lower like 1.25 and when the server starts it resets to 2. Is this not possible? It seems like the value is an integer rather than a float because if I use 1 or 3 it works fine

I'm a few months late here, but there are a few lines of code in Config.java which check if the multiplier is lower than 2 and set it to 2 if so. I have no clue why it would work for 1; it shouldn't.

The value is a float.