[2022] Game stutters and days progress extremly slow

It's more likely the video system than memory; it looks like that machine only has an integrated Vega 8 video system, which is to say the video is done by the CPU rather than dedicated hardware.

All you can really do is reduce the graphics quality settings as much as you can stand - turn off trees, city sprawl, ambient objects, shadows etc. And run in fullScreen mode.

Good luck!