  Whether to reset qubits, or not, during quantum error correction experiments
is a question of both foundational and practical importance for quantum
computing. Text-book quantum error correction demands that qubits are reset
after measurement. However, fast qubit reset has proven challenging to execute
at high fidelity. Consequently, many cutting-edge quantum error correction
experiments are opting for the no-reset approach, where physical reset is not
performed. It has recently been postulated that no-reset is functionally
equivalent to reset procedures, as well as being faster and easier. For memory
experiments, we confirm numerically that resetting provides no benefit. On the
other hand, we identify a remarkable difference during logical operations. We
find that unconditionally resetting qubits can reduce the duration of
fault-tolerant logical operation by up to a factor of two as the number of
measurement errors that can be tolerated is doubled. We support this with
numerical simulations. However, our simulations also reveal that the no-reset
performance is superior if the reset duration or infidelity exceeds a given
threshold. Lastly, we introduce two novel syndrome extraction circuits that can
reduce the time overhead of no-reset approaches. Our findings provide guidance
on how experimentalists should design future experiments.
