My numbers kept varying wildly from 174 to 189, in the same patterns across multiple devices (initial number different from stable next-five results), so I tried a few things.

First I shifted the app to use P3 `oklch(.7066 .1611 $hue)` with range (150..210) centered on cyan at 180°, same as sRGB. No change, so it's not some sort of artifact of colorspaces. Then I upped it to 16 steps instead of 8. The window narrowed slightly, but the same first-then-the-rest shift kept happening. Finally I raised the random color static mask duration from 200ms to 5000ms. Scored 180 +/- 1. Huh. Makes sense, given the image persistence stuff I deal with.

So, for those seeing that same variability I'd recommend editing that first (local response override index-blah.js, search `, 200` replace `, 5000` by hand, reload page) to get a more stable result.