Optimize startup with reduced threads and timing logs

setup.sh

@@ -11,7 +11,7 @@ python - <<PY
 from huggingface_hub import hf_hub_download
 import os
 repo_id   = "TheBloke/Mistral-7B-Instruct-v0.1-GGUF"
-filename  = "mistral-7b-instruct-v0.1.Q4_K_M.gguf"
+filename  = "mistral-7b-instruct-v0.1.Q2_K.gguf"
 local_dir = "models"
 if not os.path.exists(os.path.join(local_dir, filename)):
     hf_hub_download(