S!
I am pushing my luck but for some unknown reason my game began to run smoothly at solid 60fps a couple of days ago. I am not sure what I did, but I think it was that I adjusted settings to my liking and then shut off the game and cleared cache. Even online I had 60fps and the sound did not die out even I had trees on(on LOW). But I bet after saying this out loud the game will resort to a crawl again