TL;DR. Best reward comes decisively with the LoRA at 50% (0.622) — the strongest single condition across this emotion, well above BASE_P (0.518) and collapsing merges above 50% (LoRA100 0.407, LoRA150 0.388). Recommendation: run the evolved prompt plus the 50% LoRA and stop there. The win is driven by a big vocal-burst blend jump (0.485 to 0.591) and higher genuineness (0.151); the trade-off is a modest quality dip (0.549 to 0.485) and higher WER (0.246 to 0.319). Its most notable side-effect is that bitterness renders as weary sadness — LoRA50 correlates with Sadness, Fatigue and Helplessness and injects Emotional Numbness, while suppressing Concentration (-0.39).
Without a LoRA
Best: evolved prompt, no LoRA → reward 0.52
GENERAL: A voice deeply expressing bitterness, a bitter, resentful voice, jaded and sardonic, dripping with disillusion, in every breath.
SCRIPT: (bitterly, with jaded resentment) "<neutral sentence>" · temp 0.9 top_p 0.95 top_k 25
Best reward comes decisively with the LoRA at 50% (0.622) — the strongest single condition across this emotion, well above BASE_P (0.518) and collapsing merges above 50% (LoRA100 0.407, LoRA150 0.388). Recommendation: run the evolved prompt plus the 50% LoRA and stop there. The win is driven by a big vocal-burst blend jump (0.485 to 0.591) and higher genuineness (0.151); the trade-off is a modest quality dip (0.549 to 0.485) and higher WER (0.246 to 0.319). Its most notable side-effect is that bitterness renders as weary sadness — LoRA50 correlates with Sadness, Fatigue and Helplessness and injects Emotional Numbness, while suppressing Concentration (-0.39).