I'm getting insane response delays and frame drops during summon fights in FF16 PC. Why is this?

Whenever a massive magic circle renders, my FPS tanks from 120 down to 78, and the stuttering is just brutal. It turns out the default timings on the Asgard Thor DDR5 6400 are a mess for complex instruction sets, hitting latency spikes between 95-115ns. I tried toggling Windows Game Mode, but it was a waste of time since the 1% Lows were still all over the place. I eventually dove into the BIOS and tightened the primary timings from 32-34-34-76 down to 30-32-32-72, while bumping the voltage to 1.4V. Using RTSS, I saw the frame time collapse from a shaky 12-28ms to a rock steady 7-11ms. It wasn't a walk in the park—I hit two BSODs right at the desktop before I loosened the tRFC to 500 to stabilize the kit. Temps are sitting between 52-58℃ now. After comparing the curves, latency dropped by 14%, and the settings are finally locked in.