So my system is…
Ryzen 3900X, 32GB RAM 3200mhz, ASUS TUF OC 3090, various Solid state drive’s inc a 2TB Sabrent Rocket PCIe 4.0.
I’ve experienced similar Ram usage as you, but the GPU is frankly sat there not breaking a sweat. Yes you can bump up resolution scaling etc, but all you are really doing is pushing the VRAM usage - everyone with a fairly competent GPU is CPU limited in MSFS