Today I was playing SQUAD (http://store.steampowered.com/app/393380) again and it provides acceptable framerate on my mid-level PC (GTX760,i5) on Epic settings now. About 60FPS on regular maps, about 45 in forest maps. As far as I know they used fully dynamic lighting and Ray Traced Distance Field Soft Shadows (probably DFAO too).
At the same time I am trying to get good performance with open world map with foliage on my PC - it is seems almost impossible. You could tweak LODs, billboards, procedural placement, lighting and shadows, maps design, overdraw, etc - it is still bad (best case - 30 FPS on winter map https://cdn.discordapp.com/attachments/117189132270174210/156451699538526209/unknown.png)
So… Anyone have idea how they able to achive such good performance?