I currently have this motherboard and a A-10 6800k with Nvidia GeForce GTX960 and I have performance issues, im not sure if im bottle necking my PC and should upgrade my CPU or upgrade my CPU and motherboard if there isn't a good replacment CPU.
Something like this but TBH I'd go with Ryzen 5 since it can be overclocked and has more cores/threads so multi-tasking or doing any kind of video editing would work better. You could get a unlocked i5 & Z270 motherboard but it's going to cost quite a bit more since you will need to buy a aftermarket cooler. This build is the locked version.
If the performance issues your having is a low FPS then getting a better CPU/MB/RAM will definitely help, either the Ryzen 5 build I posted above or a Kabylake i5 build would be a massive improvement over your current system.
Something like this but TBH I'd go with Ryzen 5 since it can be overclocked and has more cores/threads so multi-tasking or doing any kind of video editing would work better. You could get a unlocked i5 & Z270 motherboard but it's going to cost quite a bit more since you will need to buy a aftermarket cooler. This build is the locked version.