I don't know wheater it's the same or not, but I feel like it's worth mentioning. People often say to me that they didn't understand me (even when I didn't stutter in that sentence) or that I should speak louder. I feel like my mouth got lazy or something and I just can't speak very loud or I "skip" some sounds in the word/sentence. It's an awful feeling, I know. Did you ever try some exercises or speech therapy maybe? (EDIT: I ask only informatively, I suggest nothing)