'Ask for more PHP workers and the site speeds up' — usually no

'Ask for more PHP workers and the site speeds up' — usually no
Heard this week from a capacity review: a host kept selling worker bumps to a slow client. Word is the bottleneck was a single uncached admin-ajax call holding workers hostage, not the count. A source who tunes these platforms says adding workers to a slow app just lets it fall over more expensively, and reps love the upsell because it's instant revenue. The advice to 'add workers' treats a queueing symptom as a capacity problem.
Watch this: when support's first answer is 'upgrade your worker tier,' ask which request is actually pinning them.