Yay got Gemma 12B QAT working on old 1080ti (maybe with speculative decoding?)

Pretty happy with 50 tok/sec on this 9 year old GPU. Suggestions to improve anything (speed or quality) very welcome! I'm not 100% sure how to tell if the speculative decoding "model-draft" is helping or not. But hey, it is fast and seems coherent, I'm happy

bash ./build/bin/llama-server \ --hf-repo unsloth/gemma-4-12B-it-qat-GGUF \ --hf-file gemma-4-12B-it-qat-UD-Q4_K_XL.gguf \ -c 16384 -ngl 99 \ --cache-type-k q8_0 --cache-type-v q8_0 \ -b 512 -t 4 \ --spec-draft-hf unsloth/gemma-4-12B-it-qat-GGUF \ --model-draft MTP/gemma-4-12B-it-Q8_0-MTP.gguf \ --spec-type draft-mtp \ --spec-draft-n-max 2 \ --override-tensor-draft "token_embd.weight=CUDA0"