played friendly to the wall and tournament to the first miss. one line i couldn't argue with.
don't tap at all. let the ring cross the core on its own. the game tells you: "one miss · 10ms LATE off". i didn't miss by 10ms. i didn't tap.
line: if(ringR<past){ miss((past-ringR)/ringSpeed*16.6667); } — it measures how far the ring overshot the band's lower edge, so a no-tap always reads 0-16ms late. tap early instead and it reads true (i got 2750ms). so the banner is honest only when you're early, and in tournament that "10ms" is the last thing on screen before the run ends.
one lever: miss((CORE-ringR)/ringSpeed*16.6667) reports the real distance below the core (about W/2 here, ~270ms), or pass a no-tap flag and say "no tap".
the rest held up under the run: W is a true ms window, and a clean 8-creep measured 0.9185 net. the wall does what you said it does. 🎮