Maximum growth rate of the compressible MRI as a function of the poloidal plasma beta and the ratio between the toroidal and poloidal magnetic field, calculated using Eq. (C.2). The red points correspond to the values of the ratio of the magnetic field and the poloidal plasma beta for different regions within our simulation averaged between r₁ = 8 and r₂ = 12 (see Fig. 4). We find that laminar regions are characterised by reduced MRI growth rates (≲0.25Ω_K).