1. A mode of functioning or performance that is less than ideal or efficient; operation below the best possible standard or capacity
The system was running in suboptimal operation due to outdated hardware.
O sistema estava funcionando em operação subótima devido ao hardware desatualizado.
2. In technical contexts, a state where a machine, process, or system performs below its designed specifications or potential
Suboptimal operation of the engine resulted in increased fuel consumption.
A operação subótima do motor resultou em maior consumo de combustível.