Test suites become the bottleneck: dev ditches M5 Pro for beefy remote sandboxes

cjimti · x · 2026-10-11

Developer cjimti shares a first-hand observation from running AI coding workflows: his biggest bottleneck is no longer the model but test suite execution—his M5 Pro can't keep up on CPU and memory. He's concluded he needs remote sandboxes with massive CPU and memory to handle the iteration loops of coding agents.

It's a notable engineering signal: as agents run tests heavily and in parallel, local machines become the constraint, driving demand for remote dev sandboxes.

Related event: AI Coding's New Bottleneck: Slow Test Suites Demand Remote Sandboxes(2 posts)→

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