Dear Johnibur,
Maybe it was something with my Windows 10 installation then. I just updated it and I got weird performance issues.
Thanks for you help. I appreciate it.
Sincerely,
Joshy2018
I figure it out. It wasn't the game. It was the shortcut key for Mac, so that problem is fix.
Hello again.
I have fixed my performance problem. I have the latest Java runtime in my PC and I just switched the bundled Java version to the latest Java version (1.8.0_241).