Here you go Eleniya. the channels audience base is English, so hopefully you can understand enough of it. Here is part 2: https://www.youtube.com/watch?v=G03fzsYUNDU The videos specifically talk about driver overhead from Nvidia drivers, and how the drivers are very software - hardware based. But once you take into account how DX11 works, and that's what D2 uses, it's easy to put 2 and 2 together. That's also why I mentioned that D2 uses a custom version of DX11, as no other games that i have played (my collection is vast) being DX11 based suffer from issues. Blops 3 for instance, runs at 5K (1440p 200%) at 100-144fps no problems. which is another notoriously poor PC port of a console game