Google does this pretty regularly internally. Every system has a published SLO, and for a couple weeks a year major components will respect their SLO and not a

Google does this pretty regularly internally. Every system has a published SLO, and for a couple weeks a year major components will respect their SLO and not a single request or millisecond better. If you were relying on something performing 10x better than what it's rated for in order to provide your own guarantees, then that's on you.