  Probabilistic generation of photons and electron-positron pairs due to the
processes of strong-field quantum electrodynamics (SFQED) is often the most
resource-intensive part of the kinetic simulations required in order to model
current and future experimental studies at high-intensity laser facilities. To
reduce its computational demands one can exploit tabulation of the precomputed
rates, time-step sub-cycling, dynamic down-sampling of particle/photon
ensembles and other approaches. As the culmination of previous improvements,
the method described here provides the opportunity to make the minimal possible
number of rate computations per QED event and, therefore, this method can
increase performance by more than an order of magnitude. The computational
routine is publicly available as a part of the open-source framework hi-$\chi$
designed as a Python-controlled toolbox for collaborative development.
