Well, my laptop broke. And I had to buy a new one. With Windows 10 64-bit.
During the first attempt to run the game, I have noticed that Video Memory usage was well above 100 % (sometimes even 300%).
After some combination with options, I was able to drop it to 77-89% (mostly by turning off Post Effects, keeping Shadows at low and Landscape quality at Low. Also, max. resolution at 1600x900 (16:9)).
And this i not the problem with my new laptop - as it's Dell Inspiron 7567 with 16GB RAM. I am quite sure the aforementioned problem is because the game has compatibility issue with Windows 10. Which is stupid, if You think about it.
My point is - Should there be any new patch for the game in the future, I think this should be it's priority. To fix compatibility with Windows 10. So as not to force players to turn off more advanced options because of it.