This type of self-tuning can be close to instantaneous. However, in order to realise such self-tuning one needs to control the environment in which the system operates and a good enough understanding of how the environment influences the controlled system is required.
This type of adaptive control can be extremely rapid. Nevertheless, in order to achieve such adaptive control one needs to manage the surroundings in which the system functions and possess a satisfactory comprehension of how the environment affects the controlled system.