Kingston Fury Beast 2666MHz CL16-18-18-39 base kit (acquired for $50 before the historic spike in RAM prices).
I play Escape from Tarkov, and honestly, the difference is noticeable—better stability and easier enemy tracking.
I’ve attached the overclock settings; I didn't do anything crazy, but I was surprised to be able to push a 2666MHz kit to 3600MHz using CR1T/GDM OFF. Granted, 1.45V is a bit high for DDR4 RAM, and I definitely loosened the timings a bit to achieve this incredible result—especially since I previously had a Ryzen 5 2600 (and overclocking RAM on that CPU is a headache, even with this same kit). It remains to be seen if I can squeeze a bit more out of this kit by lowering the voltage or tweaking secondary timings, but I think I'll leave that to the pros; I don't feel the potential improvement is worth the time it would take.