For seeing where your potential bottle neck is in terms of performance, you should be looking at what load is on your CPU and GPU while running the game. AoC is pretty much all single-threaded, so you are only looking at whether it is fully using a core or not. There are a lot of different I9 models, some with better single-threaded performance than others.
Depending on which one you have, you probably aren’t going to see much improvements from any other CPU.
GPU seems more likely a place that could be improved a bit, but the 1060 is probably plenty for this game, depending on what screen resolution you run at. You can see how close to 100% utilization you get by running something like MSI Afterburner.