All 9 configurations done. Across 8 valid runs (one excluded as a harness ready-up race, not a memory failure): min 616MB, median 730MB, max 770MB. Confirms the headline: peak RSS is flat across both heap cap (384m..2g) and match size (4 vs 8 units). Budget ~750MB per concurrent match under process-per-match. Known harness defect: the bot ready-up race still fires in roughly 1 of 5 runs, leaving a game at round 0. Waiting on observed entity state before sendDone reduced but did not eliminate it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>