>>536531069
The only graphics settings that had any effect on my fps was Render Distance and Render Detail. Setting both of them to low will make enemies look like blocky PS1 models which is kinda funny but it will also prevent very distant objectives from rendering, like shrieker hives and automaton fabricators. You will be forced to zoom in with your weapon to make them render.
Also have you tried the particle shadows .ini edit? Some anons say it makes a big difference.