How to make prompt processing faster for Qwen3-30B moe?

[CHNtentes]

I'm using a 4070 12G and 32G DDR5 ram. This is the command I use:

.\build\bin\llama-server.exe -m D:\llama.cpp\models\Qwen3-30B-A3B-UD-Q3_K_XL.gguf -c 32768 --port 9999 -ngl 99 --no-webui --device CUDA0 -fa -ot ".ffn_.*_exps.=CPU"

And for long prompts it takes over a minute to process:

prompt eval time = 68442.52 ms / 29933 tokens ( 2.29 ms per token, 437.35 tokens per second)
eval time = 19719.89 ms / 398 tokens ( 49.55 ms per token, 20.18 tokens per second)
total time = 88162.41 ms / 30331 tokens

Is there any approach to increase prompt processing speed? Only use ~5G vram, so I suppose there's room for improvement.