MP3 is still very popular. Why is LAME encoding to 128 kbit/s CBR by default?
Why not switch to V2? Maybe even V3 or V4?
128 kbit/s CBR is archaic.
Every other encoder seems to target normal bitrates.
QAAC targets 192 VBR.
Opus targets 96 VBR.
x264 (yes, video ) targets 23 CRF.