My Asgard Vengeance DDR5 6000 is having latency swings during LoL team fights, causing drops. Do I need to tune timings?

In the middle of a chaotic team fight, my FPS would randomly tank from 240 to 160, which completely ruins the feeling of my movement. The default C30 timings on this Asgard kit were hitting 75-85ns latency spikes when pushing high frame rates. I tried enabling 'Game Mode' in the drivers, but while CPU usage dropped, the latency stayed high—a very surface-level fix. I went into the BIOS and tightened the primary timings from 30-36-36-76 down to 28-34-34-72, and bumped the voltage from 1.35V to 1.38V. AIDA64 showed latency dropping from 82ns to a tight 62-67ns, and the smoothness in team fights is night and day. I actually blue-screened trying 28-28-28 at first, so I had to loosen tRAS to 76 to get it stable. RAM temps are now 42-48℃ and VRM is at 55-60℃. The frame drops are gone, though the voltage bump makes it run slightly warmer.