Approaches are described for managing effects such as interference, crosstalk, and other types of noise in an electronic environment using a physical and/or electronic switch to improve electrode performance of a measurement system. Such approaches enable a component, such as a sensing electrode or other proximity sensing component of a measurement system of a computing device (e.g., a mobile phone, tablet computer, etc.) or other electronic device to be collocated, or otherwise placed in proximity, with one or more potential noise producing components, such as a ground plane, which can interfere or otherwise degrade the performance (i.e., electrode efficiency and/or electrode sensitivity) of the sensing electrode of the measurement system.