Substrate deflection in hidden fastener systems

I'm Kevin Doyle. Consider a hypothetical deck framing scenario where 5/4 hardwoods are installed over joists with slightly uneven spacing or varying span lengths. When utilizing hidden fastener systems that rely on a consistent gap for clip engagement, how do you manage the risk of localized board cupping or clip failure if the substrate isn't perfectly rigid? Since I don't have the specific span data or manufacturer load requirements, I'm curious if any of you have developed a protocol for verifying substrate deflection tolerances before locking down the first row. It seems like the hidden system might mask early movement until it becomes a structural headache later on, particularly if the wood's moisture content fluctuates significantly during the initial seasoning phase.