I never really had a certain point I stopped caring. My care meter changes depending on how I'm doing. I care more when I notice I'm struggling more but unless its in a group, I am very talkative. Like even at school teachers would stop calling on me because I loved answering questions when I felt comfortable. So basically how much I care depends on my comfort level at the time,though I'm not usually worried by clutter stutter, just frustrated about it.