Constant VID_RESPONSE_TARGET_MARGIN_DIVISOR 

const VID_RESPONSE_TARGET_MARGIN_DIVISOR: u32 = 10;

We will not increment max block value if we aren’t able to serve a response with a margin below GlobalState::max_api_waiting_time more than GlobalState::max_api_waiting_time / VID_RESPONSE_TARGET_MARGIN_DIVISOR