I would say much improved, since the H&H update, I have a modest sized base, still in my starting area, it suffered frame drops before H&H, some tweaks made a good improvement, but now it is a lot better. I have a sizeable double perimeter terrain wall, with two entrances opposite sides, 12 or more wolves at each gate, and other larger tamed things through out the perimeter, even during raids it is going well so far. I have been keeping an eye on frame rates to see what or how much I do might effect it.

Feels as though they quietly slipped in a good optimisation along with H&H, hope it goes well for you too.