llama 3.3 70b q4_k_m perplexity on code with async/await vs callbacks

tested on 15 real production codebases (node/typescript). async/await syntax holds coherence to 24.7k average, callback-heavy code breaks around 21.2k. perplexity at 20k: async/await = 7.8, callbacks = 9.4 theory: async/await creates cleaner control flow the model can track. callbacks create nested scopes that fragment attention. anyone seeing similar patterns?