Left panels: MATISSE_G results for cool random spectra of S/N ~ 20 at the nominal high resolution (HR) compared to those for the lower resolution (LR) spectra of the same stars (and same S/N value). Right panels: normalized distribution of residuals for the high-resolution spectra (red curve) and for the low-resolution ones (black curve). The ratio of the 68% quantile values of both distributions is given for each stellar parameter.