In Helldivers 2, my Sapphire Pure Polar RX 9070 XT drops from 90 FPS to 30 during heavy artillery strikes. Is this normal or do I need to tweak something?

Whenever the screen fills up with explosions, the game turns into a slideshow, making it impossible to land a precise shot. The GPU usage on my Sapphire card was pinned at 92-98%, but I noticed the CPU scheduling was hitting a massive wait-lock between 12-16ms. I tried lowering the global illumination quality first, which gained me about 10 FPS, but the lighting looked flat and lifeless—I couldn't live with that compromise. I decided to go nuclear: used DDU to wipe the drivers, installed the latest Beta build, and killed three redundant background monitoring services. In RTSS, my 1% lows jumped from 28 FPS to 52 FPS, and the frame time variance shrunk from 15-40ms down to a tight 11-16ms. It wasn't a smooth ride; the game refused to launch after the first service tweak until I reinstalled the DirectX runtime. Now, core temps are 66-72℃ and VRAM is 78-84℃. The FPS dips are way less severe, and the input response feels instant.