Most Reverb settings don't have any effect

I’m trying to setup different reverb settings for different areas of my map but even though there are 13 different settings I can change in reverb the only ones that make any difference at all are Gain and Decay Time.
No matter how many tests I run those are the only two settings that make any difference, I also tried listening to the dozen or so premade reverb settings in the starter content, and even those have such minor differences they are basically all the same.

My question is are there some audio settings in the project settings that I need to alter to get different reverbs?
Changing the Decay Time and the Gain do make a slight difference but changing every single other setting makes literally no difference.