I am at 20%,
in the morning I often feel almost normal,just that i have to do things slower than usual.by afternoon I need more frequent rests,evening is pretty much a wipeout
I am at 15-20% and it leaves me feeling weak and tired all of the time. I also have bouts of shortness of breath, and I frequently swell, usually from my naval down.
I have good moments that can last from about 1 minute to 20 minutes, and then I hit a wall and have to find a place to sit down, or I fall down.
I don't know what living at 30% does to you, except I would expect it to be some of the same as I experience.....just less of it.