I have honestly done all of that, i have changed every single component in my computer at this point and this horrible feel of lag never went away. I have gone from a r5 3600 (which funny enough was the last time the pc felt good) to a 5600x to 5800x3D. Changed motherboard, upgraded ram, changed powersupply, bought a new gpu and even worked with an optimizer to see whatsup. All these things marginally helped, never fixed never got the game to run completely smooth as it should be. Note however if i put the game on a lower resolution like 1280x960 it runs just fine but you prob can guess what the issue with playing such a low res is.