Error Rate Estimator.
Eliminating physical key boundaries changes the nature of typographical errors. Instead of "fat-fingering" an adjacent key, chording errors manifest as mis-timed simultaneous presses. Model your adaptation timeline.
Estimated Raw Error Rate
%
High initial error rates are caused by timing desyncs (e.g. index finger firing 30ms before thumb). The Cortex-M7 allows up to 45ms of drift tolerance, but neural adaptation takes time.