I'm getting response lag and frame drops while walking through towns in Red Dead Redemption 2 with ADATA DDR5 4800. Should I optimize the channels?

The immersion of riding through the frontier was constantly ruined by these random stutters. I noticed the memory bandwidth usage spiking from 40% to 95% in half a second, causing the clock speed to tank. Looking back at my settings, I had the memory power management set way too aggressively to save a few watts, which created huge wake-up latencies. That obsession with efficiency was killing my performance. I went into the BIOS, disabled all memory power-saving states, and raised the voltage floor to 1.1V. My sensors then showed response times locked at 75-80ns, and frame intervals dropped from 18.4-25.1ms to 12.2-14.5ms. I first tried adding more virtual memory, but that just caused disk conflicts. It wasn't until I moved the game to a high-performance NVMe drive that the choppiness vanished. This RAM is slow, but as long as it responds quickly, it hits the baseline. I switched the mode to High Performance in the motherboard software, and temps stayed around 55-60℃.