Well, I started the game when I had a laptop with a Nvidia RTX 1060 and 16 RAM... That took ages. I invested a little bit... I now have a computer with 64 Gb RAM, 2 graphics card (RTX 3090 24 GB VRAM and a RTX 3080 TI - the second CG is only being used for their CUDA cores... and to go faster). I spent a lot in fact in it, but I think it was necessary to work smoothly.