Low RAM causing stuttering?

Jun 9, 2018
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Hello again, I have a quick question this time about my stuttering issue.

Specs: Ryzen 5 1500x
8GB Corsair Vengeance DDR4
GTX 1070 8GB
No SSD but 1TB mechanical HDD

I was playing The Division today and experienced major suttering issues which ended up crashing my game after about 1 hour of playing.
I know it's not my Graphics Card since it's brand new and doesn't have this issue with most other titles.

I checked MSI Afterburner and temps stay around 45 Celsius - Minimum | 70 Celsius - Maximum |
but mostly stays around 50-60 degrees.

The processor isn't bottlenecking the GPU at all and I have plenty of wattage for the hardware.

I did check though and while playing The Division, RAM usage goes up to around 60 - 70% usage (With discord open as well).

I'm just verifying that the issue is RAM so I know what to buy to fix this issue.