/* do not allow TD stereo ACELP core -> DFT stereo TCX core switching as it is on the WC complexity path */
if(((st->last_core==ACELP_CORE&&last_element_mode==IVAS_CPE_TD&&st->element_mode==IVAS_CPE_DFT)||(st->tdm_LRTD_flag==1&&st->total_brate<=IVAS_16k4))&&st->core==TCX_20_CORE&&st->total_brate<=MAX_ACELP_BRATE)/* Override TCX in case of LRTD && primary channel has low bitrate*/