The term bottleneck is badly misused.
Yes, there will be cases where the CPU can't supply the GPU with data fast enough. That does not mean performance will be worse than it would be with a less-powerful video card.
Still, this is dated hardware. The card performs a little slower than say a GTX1060/RX470/RX480/RX570/RX580, which are the standard "high details at 60fps average at 1920x1080" cards.
The FX-6300 is also quite a dated CPU.
Still, if you want to be absolutely sure, you can run hardware utilization monitoring software (HWInfo, or MSI Afterburner, etc) to see what the percent utilization is of your CPU, GPU, RAM, hard drive, etc. If anything is pegging at 100%, then that's your weak point. It also may be a different component that's the weak point for different games.
That said: Is 14GB of RAM correct? That seems wrong. It should be, say, 8, 12, or 16.
Also: what is your monitor's resolution and refresh rate? 220 fps is meaningless, as I doubt you have a 240Hz monitor.