I can't get Qwen 3.8 27B to do a simple code review on a fairly basic Python file. With thinking on it just ruminates forever and with thinking off it gives obviously bad borderline hallucinating advice.

Edit: I tried again with the 2.4T model and it still ruminates to death, but with thinking turned off, it generated genuinely useful advice.

Edit2: adding

  --reasoning-budget 8000   --reasoning-budget-message "Reasoning budget exhausted; give the final answer now."   --reasoning-effort low" 

to the llama.cpp executable parameters produces pretty good output.