RAM latency
RAM latency
Ryzen 3 1300X with 2x4GB RAM installed on a dual-channel motherboard.
You noticed clips demonstrating significant variations such as 20-30 frames per second, which explains your concern.
Having a 2666MhzCL19 RAM wouldn't be ideal, but if a 3000MhzC15 setup wasn't feasible, I wouldn't be too concerned. At least it offers 2x4GB of memory; a single 8GB would have been even worse. If you notice slight stuttering in games, your RAM might be the cause.
As @minibois mentioned, it's a dual channel setup rather than a single 8GB card.