I have a decent computer (although it only has 6 GB of RAM), but after the middle of the map, saving takes 10 minutes. So, even when they fix it, you'll need 8 GB to play without problems (on large maps). It's a shame, I thought I could play it on a tablet, but that's definitely not going to happen (it has 2 GB).
P.S. I recommend buying it after the patches and preferably on sale for around 600 rubles. I'll do the same.