Oculus Spatial Reverb Without Early Reflections

Hello! I'm integrating Oculus Spatial reverb in FMOD. I want to disable early reflections and only have reverb because of performance cost. However, when I turn off "Reflections" on my spatial reverb in FMOD, the audio sounds the same as it does with the plugin bypassed. I've seen the ability to turn off early reflections mentioned several times online. How do I do that/Why isn't reverb being applied? I am testing in the FMOD editor.