Shadows to low, med on everything else, view distance high. Resolution scale all the way up. Both ground clutter all the way down. Uncheck all boxes. Check your fps and start moving things up from there. Make a few changes and test your fps for a while. Fps can be enabled in steam. I am on a 1080 40" at 1366x768 in window mode to use more of my screen. What you have and set it to will affect performance.
Hi guys. I turned everything in the checkboxes off. Everything low/med apart from world tile buffers which is epic. And including some boot options including no sky effects, use all cores and a few others I can't remember off hand but I'm now hitting over a 100frames out and about and around 70fps in the base.
Tip to make fos quicker is go into the main settings of the game and manage the graphics option from graphics 5 to 3 and it runs much faster but since i have a good pc I just run epic hope your god increases