Why does frame rate drop when exploring new areas in Avowed?

I noticed the frame rate dipping from 60 to 45 FPS whenever I discovered new terrain. I tried deleting the shader cache manually, which resulted in a 5-minute compilation stall that I couldn't control. GamePP Shader Compilation Queue Manager solved this by enabling background pre-compilation with High priority. RivaTuner showed frame generation time converging from 16-22ms to a tight 16.5-16.8ms. The frame rate locked at a stable 60 FPS, making exploration smooth again.