Getting massive instruction delays and FPS drops in complex scenes in Unknown 9 with G.Skill Trident Z DDR4 3600; do I need virtual memory?

After about three hours of play, my FPS would slowly bleed from a solid 110 down to 60; the way the memory controller handled the load was just pathetic. The factory timings on the G.Skill Trident Z RGB DDR4 3600 were hitting 72ns - 78ns of latency, which is a disaster for the fast-paced stealth combat in this game. I tried lowering the resolution, but it only gave me 8 more FPS while the input lag stayed exactly the same—a total waste of my time. I decided to go into the BIOS and crush the timings down to 16-16-16-36 and tweaked the SoC voltage to 1.2V. AIDA64 latency plummeted from 75ns to 62ns - 66ns, and the character movement finally felt connected to my controller. I almost bricked the boot process trying 14-14-14, but relaxing tRAS to 38 got me back in. RAM temps are stable at 56℃ - 61℃, though I noticed the VRM area hits 58℃ - 63℃ during long sessions.