[jrMC] launching 20 bots at 250ms interval (rate=4.00/s)
[jrMC] all 20 navigations fired, polling readiness (up to 30s each from its own nav start)...
[jrMC] rate=4/s ok=19/20 fail=1 p50=30ms p90=31ms max=232ms
[jrMC] WROTE jr_multiC.json