Why does Cities: Skylines II keep stuttering once my population hits 100k with Crucial DDR5 4800MHz 16GB?

When the city hits its limit, the sheer volume of high-fidelity assets pushes the Crucial DDR5 4800MHz 16GB bandwidth to the absolute ceiling, causing frame times to swing wildly between 15-45ms. I first tried killing every useless background service in Windows, but it only gained me about 2 FPS—a pathetic improvement that made me seriously question my RAM capacity. I eventually dove into the Registry Editor to manually enable Large Page memory allocation and locked my virtual memory at a fixed 24GB. Checking Resource Monitor, the memory commit dropped from a critical 15.8GB down to a stable 12.4-13.1GB, and that annoying hitching while zooming out finally vanished. To be fair, the first time I enabled Large Pages, the game crashed twice with memory access violations during mod loading. I had to nudge the motherboard RAM voltage from 1.1V to 1.15V to actually get it stable. With RAM temps sitting at 42-48℃ and CPU load between 75-82%, the performance analyzer confirms throughput is finally flat, with frame times locked in at 12-18ms.