My stutter is probably on one of the most severe sides of the spectrum. Even amongst other stutterers in a group therapy, I remember how mild and controllable the other kids’ stutter was in comparison to mine. Some rarely stuttered at all. Only one other guy’s stutter was as severe as mine. So yeah you’re not alone, my dude. Having to consciously think/worry about something that literally everyone else can do so effortlessly can be draining. I’ve accepted I’m probably confined to a few specific jobs for my entire life as anything that requires regular communication is going to fall apart to incompetence if I’m in that position.