[jrMD] launching 20 bots at 250ms interval (rate=4.00/s)
[jrMD] all 20 navigations fired, polling readiness (up to 30s each from its own nav start)...
[jrMD] rate=4/s ok=19/20 fail=1 p50=28ms p90=29ms max=231ms
[jrMD] WROTE jr_multiD.json