Percentage deviations between BONNFIRES evolutionary sequences with varying fixed timesteps δt and shell masses δm from the sequence with the smallest timestep δt = 0.001 Myr and the smallest shell mass δm = 0.02 M_⊙. The deviations are taken for ¹⁴N abundances when the percentage deviation is the largest during the whole evolutionary sequence. The line indicates the minimal resolution required such that deviations are below 10%.