I recently tried to use the new Mic Monitoring feature and it doesn't seem to work. Not sure if it's the current build or not. At first I thought it was my single earpiece headset so bought a dual but same thing. To my understanding Mic Monitoring should play my speech back into the headset. I have tried both in party and in-game neither works.
Settings are as follows;
Headset Volume - Max
Headset Chat Mixer - Max
Mic Monitoring - Max
Chat Mixer - Tried 80% and 50% reduction of other sounds
Party Chat Output - Tried Headphones only and Speakers & Headphones