The visualizer works great, except for two issues. One is the fact that it uses around 70% of my CPU and lags my system. The other is that when using an external display (1440p), I am unable to fullscreen it. When hovering my cursor over the bar at the top displaying the program, it displays a loading icon. Also, it says the program is not responding, when it is functional, albeit, laggy. I would greatly appreciate help with any of these issues. 

I am running macOS 10.14.6 Mojave on a system with an i7 and 16GB ram.

Thank you in advance :)